* Added support for non-published condition variables. One has to call
Init() on those, and add entries directly with the
ConditionVariable::Add() method.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25110 a95241bf-73f2-0310-859d-f6bbb57e9c96
passing 0 as timeout flags or B_INFINITE_TIMEOUT as timeout, in which
case no timer will be used.
* Implemented missing thread_block_with_timeout().
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respective Private* base class.
* Changed sigwait() and sigsuspend() to use thread_block() instead of a
condition variable.
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thread_block(), thread_unblock(),...) that allow a thread to wait for
something without needing a semaphore or condition variable. It can
simply block and another thread can unblock it. Supports timeouts and
interrupting. Both semaphores and condition variables use this
common mechanism, now.
* Semaphores:
- Some simplifications due to the thread blocking mechanism.
- Changed locking order to sem -> thread. It was the other way around
before and when introducing the wait_for_objects() support I had
also introduced a situation where the locking was reverse, which
could potentially cause a dead lock on SMP systems.
- Instead of queueing thread structures, a semaphore queues
queued_thread entries now, which are created on the stack. The
thread::sem structure could thus be removed.
- Added sem_entry::net_count, which is sem_entry::count plus the
acquisition count of all waiting threads. This number is needed in
remove_thread_from_sem() and instead of computing it there we
maintain it.
- Fixed remove_thread_from_sem(). It would not unblock threads, if
the sem count was <= 0.
- Made sem::last_acquirer unconditional. It is actually needed for
sem_info::latest_holder. Fixed fill_sem_info() accordingly.
- Added some optional tracing output, though only via ktrace_printf().
* Condition variables:
- Could be simplified significantly through the use of the thread
blocking mechanism. Removed a good deal of unnecessary code.
- Moved the ConditionVariableEntry "flags" parameter from Wait() to
Add(), and adjusted all places where condition variables are used
accordingly.
* snooze() uses thread_block_with_timeout() instead of a semaphore.
* Simplified thread interrupting in the signal and user debugger code.
Instead of separate functions for threads waiting on a semaphore or
condititon variable, we only have a single thread_interrupt(), now.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25099 a95241bf-73f2-0310-859d-f6bbb57e9c96
- If the hook of the timer we're cancelling is currently being
executed, we do now wait till it is finished. This is how the BeBook
specifies the function to behave.
- Periodic timers would not be cancelled, if their hook was being
invoked at the same time, since they weren't in the queue during
that time.
- Since we know the CPU on which the timer is scheduled (timer::cpu),
we don't have to look through any other CPU queue to find it.
- Fixed the return value. It should report whether the timer had
already fired, and was not always doing that.
* Added private add_timer() flag B_TIMER_ACQUIRE_THREAD_LOCK. It causes
the thread spinlock to be acquired before the event hook is called.
cancel_timer() doesn't wait for timers with the flag set. Instead we
check in the timer interrupt function after acquiring the thread
spinlock whether the timer was cancelled in the meantime. Calling
cancel_timer() with the thread spinlock being held does thus avoid any
race conditions and won't deadlock, if the event hook needs to acquire
the thread spinlock, too. This feature proves handy for some kernel
internal needs.
* The scheduler uses a B_TIMER_ACQUIRE_THREAD_LOCK timer now and
cancel_timer() instead of the no longer needed
_local_timer_cancel_event().
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25098 a95241bf-73f2-0310-859d-f6bbb57e9c96
but also prints post syscall entries not matching the filter, if the
respective pre syscall entry matched. This way one also sees the syscall
return values. Works only in forward direction ATM.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25095 a95241bf-73f2-0310-859d-f6bbb57e9c96
kernel and added a WrapperTraceFilter* parameter, which allows for
additional filtering. This way other commands can print tracing output
with special filtering.
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variable at once. It wasn't used anymore, and the code gets simpler.
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ones) for wait_for_child(), which is notified when any job control
condition (child dead, stopped, continued) occurs. These events are
relatively rare anyway, and it simplifies the code.
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thought I had done.
Of course, that wouldn't have happened if Ingo didn't break the network boot
with his netstack changes ;-)
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to port_buffer_size_etc(), but returns the info through a structure,
which also identifies the sender (uid, gid, team ID) of the message.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25003 a95241bf-73f2-0310-859d-f6bbb57e9c96
- Updated code so Processor IDs for older processor do not have to be
modified.
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not specified by the standard, but other systems set it as well in most
cases. We set it to real {g,u}uid now, if that changes. OpenSSH (sshd)
seems to be agreeable with that solution.
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and defines the macros needed by them.
* Renamed syscall sys_vm_map_file() to _kern_map_file() and changed the
path to an FD parameter. Changed vm_map_file() accordingly and
adjusted the kernel ELF loader and the runtime loader.
* Added syscall _kern_unmap_memory().
* Added bool unmapAddressRange parameter to vm_create_anonymous_area()
and map_backing_store(). If true and the address specification is
B_EXACT_ADDRESS, all areas in the specified address range will be
deleted (unless an area is covered only partially).
* Introduced B_SHARED_AREA flag, which is set on areas that have been
created by {vm,_user}_map_file() with REGION_NO_PRIVATE_MAP. When
fork()ing those areas won't be copied CoW, but rather be cloned. This
is needed for mmap() MAP_SHARED.
* {vm,_user}_map_file() also accept an FD argument < 0, in which case an
anonymous area is created.
* Implemented mmap() and munmap(). Currently there's the restriction
that we can't partially unmap areas. Otherwise the functions should be
rather compliant. We also support the non-POSIX extension
MAP_ANONYMOUS.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24964 a95241bf-73f2-0310-859d-f6bbb57e9c96
- Updated Intel processor IDs.
- Only take extended family/model into account on Intel processors.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24958 a95241bf-73f2-0310-859d-f6bbb57e9c96
address back to userland, even if the provided buffer was smaller. Fixes
a problem with Firefox, which is for some reason providing a buffer
smaller than our sockaddr_in.
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the heap and the IOV_MAX limit.
* They also take the responsibility of copying the ancillary data in and
out.
* These syscalls were badly broken. They used a member of an
uninitialized structure instead of the iovec pointer passed from
userland. sendmsg() would thus fail or send arbitrary data, recvmsg()
would overwrite arbitrary memory.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24939 a95241bf-73f2-0310-859d-f6bbb57e9c96
src/system/kernel/fs/fd.cpp: In function 'ssize_t common_user_vector_io(int, off_t, const iovec*, size_t, bool)':
src/system/kernel/fs/fd.cpp:727: error: ISO C++ says that these are ambiguous, even though the worst conversion for the first is better than the worst conversion for the
second:
headers/private/kernel/syscall_restart.h:151: note: candidate 1: bool SyscallRestartWrapper<Type>::operator<(const Type&) const [with Type = long int]
src/system/kernel/fs/fd.cpp:727: note: candidate 2: operator<(long int, int) <built-in>
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24927 a95241bf-73f2-0310-859d-f6bbb57e9c96
ATM.
* Changed common_fcntl() to also work for non-vnode-based FDs. Only the
operations that require a vnode do fail now. F_SETFL uses the new
fd_ops::set_flags() if available, falling back to the vnode respective
operation.
* Changed some direct accesses to file_descriptor::u::vnode. It was safe
in those cases, but might not be anymore if we ever change fd_vnode().
ftp can at least connect to servers again, now, but apparently we still
have a problem with syscall restarts -- downloads fail after one second,
when the timer goes off.
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sMountMutex lock when calling sync() on a file system. This fixes a potential
deadlock (I just encountered for the first time).
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24915 a95241bf-73f2-0310-859d-f6bbb57e9c96
syscall_restart_ioctl_is_restarted() to syscall_restart_is_restarted,
IoctlSyscallFlagUnsetter to SyscallFlagUnsetter, and
IoctlSyscallRestartWrapper to SyscallRestartWrapper, as they are no
longer only used for ioctl().
* Removed unused syscall_restart_ioctl_handle_post().
* Made SyscallRestartWrapper a lot fancier. Instead of storing a
reference to the result value, it stores the value itself, and it
features all the interesting operators that make it appear like that
value. This simplifies the use of the class quite a bit.
* THREAD_FLAGS_SYSCALL is now set for all socket function and the
read[v](), write[v]() syscalls.
* Added is_syscall() function and net_stack hook to the net stack.
* Removed "kernel" parameter from all net_stack_interface and net_socket
module hooks. They aren't need any longer, since is_syscall() can be
used instead.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24914 a95241bf-73f2-0310-859d-f6bbb57e9c96
* get_dir_path_and_leaf() now removes trailing slashes from the path.
* This fixes bug #2016, thanks!
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24913 a95241bf-73f2-0310-859d-f6bbb57e9c96
- The net_stack driver is no longer used. Instead we have a kernel
module which is directly used by syscall implementations in the
kernel. I.e. we no longer tunnel those functions through ioctls, but
have normal syscalls.
- Removed the superfluous net starter module.
- Implemented the FDTYPE_SOCKET type file_descriptors, that is sockets
are no longer vnode based.
- Adjusted libnetwork (the socket function implementations)
accordingly.
- Adjusted netstat accordingly.
* Socket module:
- Implemented socketpair().
- Added "kernel" parameter to the control hook. Quite a few more hooks
would actually need the parameter, but I didn't change those yet,
since that would probably also require changes to the protocol
module interface.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24908 a95241bf-73f2-0310-859d-f6bbb57e9c96
same as !IS_USER_ADDRESS.
* Use the new IoctlSyscallFlagUnsetter helper class in _kern_ioctl().
The former implementation wasn't checking correctly for a previous
syscall flag.
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suffix. You can use this to verify the version of a module_info structure.
* Made module_info::std_ops optional.
* Minor cleanup in module.h.
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API, uses the _PRINTFLIKE macro where appropriate.
* Got rid of the "qent" structure, struct timer now contains everything we
need. This makes the affected code in sem.cpp, signal.cpp, and timer.c much
cleaner, and resolves a few TODOs.
* Minor cleanup in vfs.cpp.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24871 a95241bf-73f2-0310-859d-f6bbb57e9c96
This fixes a potential problem where a volume would be left marked dirty on
a clean reboot as reported by Vasilis; no harm would have been done to the
data on the volume, though (it would just replay a log entry that it didn't
need to).
* Unified the naming of the notifier/writer thread: renamed the thread to "block
notifier/writer", and the variable holding the thread ID to
sNotifierWriterThread.
* Added a few more doxygen descriptions to the private functions.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24870 a95241bf-73f2-0310-859d-f6bbb57e9c96
was asked to. Unfortunately, it also removed the TRANSACTION_WRITTEN
listeners (that were added before notifying other listeners), so that BFS
could never free up space in the log. Now, it will only remove the listeners
it may remove. This fixes bug #2024.
* Rearranged functions a bit, moved notification/listener related private
functions together.
* Added tracing entry for written transactions as well.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24853 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Removed the pipefs functionality. We only need to support FIFO nodes.
* Renamed the remaining pipefs_*() functions to fifo_*().
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24834 a95241bf-73f2-0310-859d-f6bbb57e9c96
also free the device info which it must not do, as this info is in fact just
a pointer to the device info of the raw node. Removing a raw device that had
partitions published therefore always lead into KDL when closing the raw
device after unpublising the partition, as the close_hook pointer which sits
in the device info now was 0xdeadbeef. This should make for example unplugging
USB devices work as expected.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24827 a95241bf-73f2-0310-859d-f6bbb57e9c96
FIFO. Reimplemented pipe() to use it.
* pipefs is no longer mounted. Will remove the superfluous code soon.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24823 a95241bf-73f2-0310-859d-f6bbb57e9c96
inactive until at least one reader and one writer have opened it. As
long as it is inactive, reads from and writes to it just block. When
active, they behave as before (if there's no counterpart writes fail:
SIGPIPE + EPIPE, reads return 0). When both reader and writer count
drop to zero, the pipe becomes inactive again.
* Allocate the ring buffer lazily when the pipe becomes active and
delete it when it becomes inactive.
This makes the pipe implementation FIFO compatible. IOW, FIFOs work as
expected as far as I've tested them.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24819 a95241bf-73f2-0310-859d-f6bbb57e9c96
- Moved most file_system_module_info hooks into separate structures.
Those that operate on mounted volumes to fs_volume_ops, those
operating on a vnode to fs_vnode_ops.
- Got rid of the fs_volume, fs_cookie, fs_vnode typedefs. We use void*
again.
- Instead of a void* volume and node cookie hooks are passed a
fs_volume and fs_vnode structure pointer, which contain the cookie
and an ops pointer (fs_volume a few more things).
- The VFS {new,publish,get,...}_vnode() functions take a fs_volume*
instead of the volume ID. So does vfs_get_fs_node_from_path().
- Added type and flags arguments to publish_vnode() and the
get_vnode() hook and removed the type argument from lookup() hook.
Added vnode::type using formerly unused bits to store the node type.
Simplified a few things in the VFS due to the now always available
node type.
- Added fs_volume_ops::{create,delete}_sub_vnode() and
fs_vnode_ops::get_super_vnode() hooks. They are used to support file
system layers, e.g. allowing to extend an FS not supporting BeOS
attribute with attribute support. Needs some more work in the VFS.
- Added fs_vnode_ops::create_special_node() hook for creating special
nodes (e.g. FIFOs).
* Adjusted the built-in file systems and BFS according to the interface
changes. Removed all other FSs from the image for the time being.
We'll see whether further API changes are necessary before porting
them.
* Adjusted the bfs_shell accordingly.
* Implemented create_special_node() in rootfs to support special nodes.
* Added support for FIFOs:
- Added syscall _kern_create_fifo() (used by mkfifo()), which creates
a special node (type S_IFIFO) in the respective file system.
- When a special node is published the VFS creates a respective sub
node. Currently only FIFOs are supported.
- Added a little support for FIFO subnodes by using functionality from
the pipefs.
- Added mkfifo to the image. It can create FIFOs in the rootfs, but
the FIFOs aren't really usable ATM, since they still work like
pipes, i.e. readers and writers need to have them open at the same
time.
* Some smaller changes in the VFS:
- Made the *_CALL macros nicer to use (vargs).
- Refactored FS entry lookup into new function lookup_dir_entry().
- create_vnode() no longer just calls the FS create() hook. First it
looks up the entry and uses open_vnode(), if it already exists. This
is necessary for two reasons: 1) The FS might not support create()
while still allowing to open() entries. 2) When the FS has other
layers on to of it (or the respective node) it might not be
responsible for opening the node.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24816 a95241bf-73f2-0310-859d-f6bbb57e9c96
based one. The path based version could not have worked for entry removed
notifications at all as the node is removed from the directory at this point
already
* Forgot to delete the device watcher instance after removing all monitors
* The PartitionRegistrar in DeleteDevice() was set to already locked which is
not the case
* Someone probably forgot to add a PartitionRegistrar to the media checker - it
did register the device on each run but never actually unregistered it, which
obviously messed up the reference counting a bit
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24815 a95241bf-73f2-0310-859d-f6bbb57e9c96
and ino_t instead of a path. Supposed to work with node monitoring messages.
Took the name from vfs_entry_ref_to_path() that takes the same arguments, but
suggestions for a better name are welcome.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24813 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Implemented RLE compression for the boot splash images, resulting in
smaller kernel and boot loader.
* Only the boot loader contains the RLE compressed images, the decompressed
buffer for the icons is passed to the kernel via kernel args.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24812 a95241bf-73f2-0310-859d-f6bbb57e9c96
within the notifier/writer thread, and will then flush the notifications
directly. This should fix#2008 again.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24806 a95241bf-73f2-0310-859d-f6bbb57e9c96
The dividing line is back although with a little more spacing. Also the icon
spacing is a little increased and I added a subtle outline as well as a little
brighter background for the active icon look. The placement logic is now not
independant of each other anymore, otherwise I couldn't center both images
as a unit. But only the vertical placement is affected.
Comments as always on the commit mailing list... :-)
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24796 a95241bf-73f2-0310-859d-f6bbb57e9c96
space left for the new log entry, it did call cache_sync_transaction(), and
then just assumed the space would be ready. But since the transaction could
have been written before that call by the block writer, and since the
_TransactionWritten() hook is now called asynchronously,
cache_sync_transaction() actually has to flush all pending TRANSACTION_WRITTEN
notifications before returning to the caller.
* To implement this, block_cache now publishs a condition variable, and
wait_for_notifications() adds a fake notification that signals that one.
Since the notifications are handled in FIFO order, this guarantees that
the previous TRANSACTION_WRITTEN hook is done.
* notify_transaction_listeners() could accidently delete notifications that
still had pending signals. Now, it will defer the deletion to the notification
thread instead in that case. This should fix bug #2008.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24792 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Added {Create|Delete}Device() analogous to {Create|Delete}FileDevice
* Added a small DeviceWatcher class that reacts to entry creation/removal
* Implemented a way to start/stop node monitoring
* Start watching for devices after the boot volume has been mounted and the
the second initial scan was run
The disk device manager now creates and scans a device when a "raw" node is
published and deletes the device on removal. This makes hot-plugging of disk
devices (for example memory sticks using usb_disk) work. Their partitions will
be scanned and published so they can be mounted. Somehow the removal of the
partitions does not yet work however, any insights are welcome.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24777 a95241bf-73f2-0310-859d-f6bbb57e9c96
the icons are centered.
* The boot loader and kernel now use the placement info that
generate_boot_screen now generates.
* Made the code that draws the images handle the case where any of the images
is larger than the frame buffer.
* All drawing functions need to know the image width (analogous for bytes per
row).
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24773 a95241bf-73f2-0310-859d-f6bbb57e9c96
called without having the cache's lock held.
* The only downside to this approach is that ending a transaction now needs
additional memory, and might therefore fail - that could be fixed by
allocating that memory upfront with the start of the new transaction,
though.
* Therefore, I reverted the cache lock to a benaphore, as the recursive
lock is no longer needed.
* The block writer thread is now a block writer and notifier thread: it will
wait for up to 2 seconds on the sEventSemaphore, and if nothing comes in,
it will continue with its previously sole job.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24768 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Introduced a new publish_node() which then actually publishs the node,
similar to the VFS's new_vnode(), and publish_vnode() semantics.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24762 a95241bf-73f2-0310-859d-f6bbb57e9c96
check in notify_transaction_listeners() didn't hold, although the
cache_hooks were deleted anyway. I've introduced a listener_change
counter to detect changes to the listener list while iterating, since
any change makes the iteration unsafe. Should fix bug #2008 for real.
Nevertheless I thing the transaction listener concept needs revision.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24761 a95241bf-73f2-0310-859d-f6bbb57e9c96
allows event listeners to add new listeners inside a node monitoring event
(i.e. if one wants to add a listener for the entry that has just been created
and triggered the current notification).
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24760 a95241bf-73f2-0310-859d-f6bbb57e9c96
Instead return the directory vnode, so the calling function can insert it after
all vnode initialization is done. Otherwise entry created notifications are
sent upon inserting the node into the directory for vnodes that are not yet
fully initialized (i.e. they have no type or the device hooks are not yet set).
That would cause for example ioctls to fail when someone would react to a
notification of a newly created device.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24759 a95241bf-73f2-0310-859d-f6bbb57e9c96
block_writer() as well as notify_transaction_listeners() must update their
data or quit. This fixes newly introduced bug #2008.
* Minor cleanup.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24749 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Prettyfied memory info in the sysinfo app.
* Minor cleanup.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24746 a95241bf-73f2-0310-859d-f6bbb57e9c96
overcommitting stores:
- has_precommitted was incorrectly set to true in the constructor
- when a precommitted page was committed, vm_store::committed_size
was still changed.
- unreserving memory did not update vm_store::committed_size.
- when precommitted pages were committed, their page count instead of their
size was reserved.
* All this lead to bug #1970 which should be fixed now.
* Cleanup of vm_cache.cpp, no functional change.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24742 a95241bf-73f2-0310-859d-f6bbb57e9c96
hasn't been used for more than 2 seconds.
* Replaced the block_cache::lock benaphore with a recursive lock, so that
you can call cache functions from within the notification listeners.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24737 a95241bf-73f2-0310-859d-f6bbb57e9c96
r24721/r24722. After resolving a symlink we weren't updating the local
type variable to the type of the link target, so that the directory
check in the next iteration would always fail.
* Added TODO.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24735 a95241bf-73f2-0310-859d-f6bbb57e9c96
* No longer checks for the path delimiter twice.
* Now also checks if the first part of the path is a directory.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24722 a95241bf-73f2-0310-859d-f6bbb57e9c96
first loop - the vnode passed in would still need to be checked, though.
Eventually, it would be nice to move the check to the top, though, so that
we don't need to search for the patch delimiter twice.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24721 a95241bf-73f2-0310-859d-f6bbb57e9c96
as expected by POSIX programs. This allowed be to compile Haiku under itself
without any hacks at all, so I guess this means that now we are officially
self-hosting!
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24720 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Not sure if it works as intended, as the specs are a bit vague.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24717 a95241bf-73f2-0310-859d-f6bbb57e9c96
in the buffer, they need to be notified after a read when their
minimal write size requirement has just become satisfied. We were
notifying only when there was no space in the buffer before, which
caused bug #1755.
* Removed Inode::NotifyWriteDone(). It's not needed anymore, since we
don't queue writers. They are always all notified, so that one doesn't
have to notify the next one, when it's done.
* Renamed *Request* to *ReadRequest, since we do have WriteRequests now
as well.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24701 a95241bf-73f2-0310-859d-f6bbb57e9c96
item entry.
* The bios_ia32 video platform code now stores the available VESA modes in
the new vesa_modes kernel_args field.
* When configuring a VESA mode via settings file, it's no longer needed to
specify the exact mode - the closest available mode is now used. This should
help with bug #1962.
* frame_buffer_console_init() now also creates a boot_item for the VESA modes
in the kernel_args.
* The VESA accelerant now filters the mode list to only contain modes that
are actually supported.
* Moved non-shared vesa driver data into its own file vesa_private.h.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24675 a95241bf-73f2-0310-859d-f6bbb57e9c96
- Added a "root" vnode to the io_context. It is used for resolving
paths and converting nodes to paths instead of sRoot. Some more
passing around of io_context structures was necessary.
- Introduced a new lock sIOContextRootLock to protect
io_context::root. The current uses of io_context::io_mutex
(put_vnode(), remove_vnode() while holding it) looked too suspicious
to use that mutex in vnode_path_to_vnode().
- Added _kern_change_root() syscall and chroot() libroot function.
- Added chroot coreutils program to the image. Funnily it seems to be
much easier to set up a little jail than under Linux (just copy
bash and libroot.so into respective subdirs; mount another pipefs
if you want pipe support).
With Haiku allowing direct access to directories via inode IDs
jailing is obviously not very secure at the moment.
- Added /var/empty to the image. It will be the chroot target for ssh.
* Changed vfs.cpp:get_cwd() so that the io_context::io_mutex is no
longer held when calling dir_vnode_to_path().
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24673 a95241bf-73f2-0310-859d-f6bbb57e9c96
- The kernel stores the group IDs in the team structure. They are
correctly inherited on fork() and load_image_etc().
- Implemented getgroups() for real, i.e. it retrieves the groups
associated with the process.
- Implemented setgroups(), initgroups() and (the BSDish)
getgrouplist(). The latter two read the group information from the
"group database" /etc/group (if existing).
- Change the BIND port config, since we do have getgrouplist() now.
* The set-uid feature was broken when the path to the executable was
relative, since we used stat(), which, in the kernel, uses the kernel
IO context.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24669 a95241bf-73f2-0310-859d-f6bbb57e9c96
reference counted memory allocations. Can be used for sharing immutable
structures.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24666 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Shuffled functions around to separate the private from the public API.
* Renamed global static io_vectors to sVectors.
* Rearranged includes, replaced deprecated malloc.h with stdlib.h.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24640 a95241bf-73f2-0310-859d-f6bbb57e9c96
finally created a solution to avoid that: Header files that contain
configuration settings (and nothing else) go to build/config_headers.
To change settings, create a directory build/user_config_headers (which
is ignored by svn), copy the respective header there and modify it at
your leisure. Currently only tracing_config.h has been moved to the new
location, but more files will follow eventually. It is also recommended
to move optional macro definitions in Jamfile (as for BFS) to a config
header instead; the build system will then automatically rebuild on
changes.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24611 a95241bf-73f2-0310-859d-f6bbb57e9c96
vnode from the hash before putting it caused all sorts of problems.
* For example, BFS would trim its preallocations when the vnode is put;
if someone would read that same vnode after it had been removed, but
before BFS could trim it, it would read the old vnode which still
seemed to own the blocks which would subsequently be freed.
* This fixes bug #1914, and should also fix bug #1956.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24607 a95241bf-73f2-0310-859d-f6bbb57e9c96
not referenced and clean (is no longer part of a transaction).
This finally gets memory consumption to a moderate level; even
unpacking a large archive will no longer eat all memory.
* The "block_cache" KDL command will now print the number of unused
blocks as well.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24606 a95241bf-73f2-0310-859d-f6bbb57e9c96
a call chain contains a specific symbol (or address).
* Added a new KDL command "calling" that you can use to get a list of
threads that have a specific function in their call chain.
* Removed extraneous white space.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24594 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Use parse_expression() where appropriate.
* Removed extraneous white space.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24593 a95241bf-73f2-0310-859d-f6bbb57e9c96
matches the specified pattern in all loaded kernel images.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24592 a95241bf-73f2-0310-859d-f6bbb57e9c96
set the actual pattern as "%d", "%x", and "%s" of the expression
after '#' respectively. They are very slow, though.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24591 a95241bf-73f2-0310-859d-f6bbb57e9c96
could be found or not, eventually resulting in a read fault.
* It now also uses parse_expression() for its second argument, since it
now returns an uint64 in Haiku.
* Tracing output cut off the label too early.
* Minor cleanup.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24579 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Add a cached_pages field to the system_info structure, and change the
meaning of the used_pages field to not include cached pages.
* Provide the needed info using the new calls vm_get_available_memory(),
and vm_page_num_available_pages().
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24571 a95241bf-73f2-0310-859d-f6bbb57e9c96
file system to not fill newly created space with zeros.
BFile::SetSize() now uses this, while [f]truncate() does not. This
is only a temporary work-around until BFS supports sparse files.
* Apps that want to reserve space to fill up later should use
BFile::SetSize() for now, as this will be a lot faster than
[f]truncate().
* cache_io() and the functions below now use a special mode when you
pass in a NULL buffer: for read access, the cache is only populated
(useful for prefetching), for write access, the file is filled with
zeros.
* Implemented BFS's Inode::FillGapWithZeros() using this method now.
* Removed extraneous white space.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24555 a95241bf-73f2-0310-859d-f6bbb57e9c96
the former ones).
* Removed extraneous white space.
* net_server settings are now also updated when the size of the
file changed.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24552 a95241bf-73f2-0310-859d-f6bbb57e9c96
time. Releasing the cache's store reference while holding the cache lock
could reverse the usual locking order -- the VFS could potentially call
the remove_vnode() or put_vnode() FS hook, which in turn could use the
file cache, thus resulting in a deadlock. Now we release the store ref
before locking the cache.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24548 a95241bf-73f2-0310-859d-f6bbb57e9c96
makes switching between GMT and local time in time prefs work correctly
without requiring a reboot to recalculate the clock.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24544 a95241bf-73f2-0310-859d-f6bbb57e9c96
- Take extended family and model into account when generating the cpu
type and revision.
- Added Intel Core 2 Extreme to the cpu list.
Please review.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24509 a95241bf-73f2-0310-859d-f6bbb57e9c96
* The boot splash code now checks wether debug screen output is enabled or not
using the above function.
* The boot splash code no longer maps it's own copy of the frame buffer, instead,
it will use the boot item feature as the VESA driver does. Also removed the
lock, as that's not needed at all.
* Renamed splash.cpp to boot_splash.cpp, and boot/splash.h to boot_splash.h
(it's not part of the boot loader, but the kernel).
* Removed dead code from boot_splash.cpp, added license. Replaced license
header in boot_splash.h to a style guide conforming one.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24489 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Fixed the icons image, it was upside down.
* Support the new 24 bit boot screen images in the boot_loader and the kernel.
* Prepare the code for future indexed versions of the boot screen images.
But the generate_boot_screen tool currently does not generate those.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24449 a95241bf-73f2-0310-859d-f6bbb57e9c96
able to resolve symlinks.
* file_open_entry_ref() now evaluates the openMode and passes the
correct "traverse" argument to entry_ref_to_vnode(). This fixes bug
#1932 (symlink refs wouldn't be resolved).
* dir_open_entry_ref() now always resolves symlinks, all other uses of
entry_ref_to_vnode() keep their previous behaviour, though.
* Fixed warnings; since Ingo's header changes, NULL now causes a warning
when it is used as int.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24442 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Calculate icon offset from stage in splash.cpp, remove hard coded placement
values. Draw only icon, not the whole image from top/left to right of
icon.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24439 a95241bf-73f2-0310-859d-f6bbb57e9c96
could be refactored to avoid code duplication (ie only cropping
implementations, with the non-cropping function being a special case of the
cropping version)
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24436 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Added the feature of an animated boot screen (icons lighting up at
different boot stages).
* Added first version of new boot splash images, generated by the new
hsbg tool. (Also finally contains the "new" Haiku logo.)
changes by myself:
* Added Artur to the contributors list in About System.
* Fixed some left overs in the patch, kept tracing turned off.
TODO:
* Remove the need for hard coding the icon positions. (Maybe generate
those from hsbg and put them into images.h? Have user provide icon
spacing/offsets at the command line for hsbg?)
* Rename the stages to something meaningful.
* Use hsbg as a build system tool and generate images.h during build
from PNGs provided in the artwork folder.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24434 a95241bf-73f2-0310-859d-f6bbb57e9c96
picked might have changed while we were locking its cache. Might fix
#1931.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24430 a95241bf-73f2-0310-859d-f6bbb57e9c96
readlink() function. It is no longer required to null-terminate the
string, shall not fail, if the buffer is too small, and shall return
the length of the string actually written into the buffer.
* Adjusted rootfs, devfs, and bfs accordingly. Also adjusted their
read_stat() hooks to return the correct symlink length in st_size.
* Our readlink() does now comply to the standard (and BeOS).
Additionally if the buffer is big enough it is nice to non-conforming
apps and null-terminates it.
* BSymLink::ReadLink() explicitly null-terminates the string now.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24425 a95241bf-73f2-0310-859d-f6bbb57e9c96
use the index of the first page of the allocation as an id. This removes the
need for separate id generation. This also fixes the possible problem of
multiple large allocations getting the same allocation_id (due to the limited
range of possible ids), which in the worst case (i.e. for adjacent allocations)
could cause pages to be freed that were still in use.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24405 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Fixed various warnings with GCC4 due to the double sHaikuRevision line.
* Turned system_info.c to a C++ file.
* Minor cleanup.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24404 a95241bf-73f2-0310-859d-f6bbb57e9c96
number. Was a problem only for partitions > 2^32 * block size (4TB
for 1KB blocks).
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24393 a95241bf-73f2-0310-859d-f6bbb57e9c96
from the call to vfs_get_vnode() now. Only this way it is safe to call
store_release_ref() later (as the page writer does). We had a potential
race condition -- if called after vm_cache_remove_consumer() had
released the last reference, the old vnode might already have been
deleted.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24386 a95241bf-73f2-0310-859d-f6bbb57e9c96
%edx) was trashed before passing it to the user debugger. strace shows
the correct return values again.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24364 a95241bf-73f2-0310-859d-f6bbb57e9c96
structure. They are properly inherited and updated on
fork(), load_image(), and exec().
* Implemented the get[e]{u,g}id(), set[[r]e]{u,g}id() family for real.
* getgroups() also calls the kernel now, but only returns the effective
group ID. Supplementary groups support is still missing.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24359 a95241bf-73f2-0310-859d-f6bbb57e9c96
all FDs in a fork()+exec()ed child open. Makes Perl test
t/run/cloexec.t pass.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24336 a95241bf-73f2-0310-859d-f6bbb57e9c96
as the death entries of a deceased processes that were in this group
and have not yet been reaped hold references to the group, so that it
won't be deleted until the group is empty and all gone group members
have been reaped. This fixes#1799 at last.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24335 a95241bf-73f2-0310-859d-f6bbb57e9c96
in code that has interrupts disabled. The chunks of memories are queued
and free()d periodically by a kernel daemon.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24332 a95241bf-73f2-0310-859d-f6bbb57e9c96
* It now also supports the common directory path.
* search_module() checked the module paths in the wrong order, ie. it preferred
modules in the system directory over the user directory.
* Clarified comment in vfs_get_module_path().
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24323 a95241bf-73f2-0310-859d-f6bbb57e9c96
buffer of the provided "path" argument.
* Applied patch by Vasilis to fix some warnings when build on Linux (missing
const on certain functions). We should probably fix the original
{add|remove}_debugger_command() functions in Haiku as well.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24322 a95241bf-73f2-0310-859d-f6bbb57e9c96
of the resolved ToDo, but could probably be made more efficient. Instead of
transfering the area, the area is cloned into the target teams' address space
and the original is deleted. This generates a new area_id for the transfered
area (as suggested by the ToDo). Updated syscall prototypes according to the
status_t to area_id return type change.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24320 a95241bf-73f2-0310-859d-f6bbb57e9c96
look for drivers (also added common directory).
* Now also honours the B_SAFEMODE_DISABLE_USER_ADD_ONS setting.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24316 a95241bf-73f2-0310-859d-f6bbb57e9c96
options.
* module_init() now sets sDisableUserAddOns to whatever the safemode settings
say, ie. the B_SAFEMODE_DISABLE_USER_ADD_ONS setting is now respected by
the module code.
* Minor cleanup.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24315 a95241bf-73f2-0310-859d-f6bbb57e9c96
we now split more than 2GB MTRR slot, we might improve this and split more and more.
this could fix the bug #1711.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24244 a95241bf-73f2-0310-859d-f6bbb57e9c96
problems in the past (it only worked for level triggered interrupts).
* Of course, the actual problem is that on current hardware we detect
almost all interrupts as edge triggered...
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24239 a95241bf-73f2-0310-859d-f6bbb57e9c96
republished, we now update them.
* This fixes occasional crashes with reloaded/repulished drivers.
* Minor cleanup.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24237 a95241bf-73f2-0310-859d-f6bbb57e9c96
check was wrong (never gets below zero if everything goes as
intended).
* Removed erroneous white space.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24232 a95241bf-73f2-0310-859d-f6bbb57e9c96
* driver_entry::api_version now stores the actual version instead of a
pointer to it.
* Renamed node_path_entry to path_entry and reused it for driver
reloading: handle_driver_events() will now also check for drivers to
add in the sDriversToAdd list.
* Added new devfs_driver_added(), and devfs_driver_removed() functions
that trigger certain driver actions.
* Implemented notifying devfs on B_ENTRY_CREATED, B_ENTRY_REMOVED, and
B_ENTRY_MOVED events in probe.cpp. The watched directory inode numbers
are now stored in a hash for B_ENTRY_MOVED.
* unpublish_driver() did not actually delete the node, it only marked
it removable since we never get/put the node. We now do, and so the
node is actually removed as intended.
* Added "devfs_driver" KDL command.
* Minor cleanup.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24152 a95241bf-73f2-0310-859d-f6bbb57e9c96
and made it public (within the kernel).
* _user_entry_ref_to_path() is now using that function.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24151 a95241bf-73f2-0310-859d-f6bbb57e9c96
vector are unhandled, it is disabled if it is not a shared interrupt vector
(as before). Otherwise a message is printed to indicate the condition. I
reduced the amount of interrupts to 10000, as with 100000 it would take over
half an hour on my machine to trigger. Feel free to adjust.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24146 a95241bf-73f2-0310-859d-f6bbb57e9c96
* load_driver() now uses republish_driver() instead of publishing all
devices every time. This allows published nodes to remain stable, no
matter if the driver has been unloaded in the mean time or not.
* Offloaded driver reloading to a kernel daemon. Since this is regarded
to happen rarely, a simple event variable will be set when something
happened, and the daemon will then check all known drivers.
* devfs_open() will now check if the driver has to be reloaded, and will
do so before opening the device.
* Moved republish_driver() around again.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24141 a95241bf-73f2-0310-859d-f6bbb57e9c96
{get|put}_node() is not really what we want either; moved the maintenance
into the open() and free_cookie() hooks.
* This should fix driver reloading on change for drivers that have been used
before.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24135 a95241bf-73f2-0310-859d-f6bbb57e9c96
unhandled. Otherwise it brings more trouble than it solves as it also disables
the interrupt of other devices (most often USB or network).
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24120 a95241bf-73f2-0310-859d-f6bbb57e9c96
NodeMonitor.h.
* The latter will be set in "statFields" for interim updates when you have
asked to get them via the former.
* BFS now uses the B_STAT_INTERIM_UPDATE flag for sending updates to actively
written files.
* This makes us more compatible with BeOS again; if you only asked for
B_WATCH_STAT, you will now only receive a notification if the file in
question has been closed.
* Tracker now uses B_WATCH_INTERIM_STAT to always get all updates (ie.
downloading a file will update its size and modification time in Tracker
periodically during the download).
* Wether "needsTrimming" was true or not has no influence on wether or not
the size index needs to be updated in BFS - only the actual file size is
stored there, not the on-disk size.
* Added a TODO comment in Inode::WriteAt() that it would actually need to
update the size index when changing the file size, not when the file has
been closed (but that's probably too slow).
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24114 a95241bf-73f2-0310-859d-f6bbb57e9c96
need to make sure that we never get that far with a negative timeout or
we'll wait forever.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24083 a95241bf-73f2-0310-859d-f6bbb57e9c96
timeout, not just -1. Paranoia only, since that should happen anyway.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24082 a95241bf-73f2-0310-859d-f6bbb57e9c96
interrupted early, i.e. when signals were already pending when we
started waiting. Fixes#1832.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24063 a95241bf-73f2-0310-859d-f6bbb57e9c96
utilizes the THREAD_FLAG_DONT_RESTART_SYSCALL (but only in SIGCONT
for now).
* resume_thread() is now using that flag to be compatible with BeOS.
* This fixes the Terminal hanging on close.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24045 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Added team::flags. Currently only used for setting a flag when a team
has exec()ed.
* Some improvements of _user_setpgid():
- It failed incorrectly when the target process was a process group
leader. According to the standard it shall fail when the process is
a session leader. Moving a process group leader to another process
group is fine, even if that leaves the group leaderless.
- Fixed race conditions. We need to recheck the error conditions when
we hold the team spinlock. Otherwise the situation could change
while we allocated the new process group. This was one of the
reasons for bug #1799 -- after the shell fork()'s both parent and
child invoke setpgid() for the child.
- Fixed behavior for pid == pgid. It doesn't necessarily mean that a
new group has to be created.
- Fixed update of target process group orphaned state.
- Squashed TODO: setpgid() on a child is supposed to fail after the
child has exec()ed.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24041 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Right now, only already known loaded drivers will be monitored for changes;
their devices aren't republished, though, since that would cause a deadlock
in the node notification mechanism (listeners are called synchronously);
need to offload that the event handling to another thread.
* On changes of (known) driver directories, the device manager will now print
some info to the syslog.
* Fixed republish_driver() I broke recently (would skip every other node), and
moved it to the driver functions section of the devfs.cpp.
* Implemented currently unused unpublish_driver() function that would have to
be called before reloading a driver.
* If a driver is in use when it's updated, we mark it, but we don't do anything
with that info when we could.
* Minor cleanup.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24036 a95241bf-73f2-0310-859d-f6bbb57e9c96
* our flock::l_len was inclusive, while it's exclusive (the last byte locked
is (l_start - 1 + l_len) not just (l_start + l_len).
* F_UNLCK removes all locks of the calling process that are within the specified
region - existing locks might also cut or divided.
* Apparently, a single team can lock the same region as often as it wants.
* advisory_locking is now using a DoublyLinkedList instead of its C counterpart.
* advisory_lock now has start + end fields, instead of offset + len, it's
handier this way.
* This fixes bug #1791.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24020 a95241bf-73f2-0310-859d-f6bbb57e9c96
name of the drivers.
* Allow driver::publish_devices() to return NULL to hint that it has no devices
to publish anymore (ie. existing devices will be unpublished in this case).
* republish_driver() now also calls load_driver() in case the driver is not
loaded.
* publish_device() and unpublish_node() now maintain the new
driver_entry::devices_published field, so we always know how many devices
a driver has now.
* Minor cleanup.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24016 a95241bf-73f2-0310-859d-f6bbb57e9c96
size of a reallocated block. If you had kernel heap leak checking on, this
could have caused the first four bytes of the next block to be overwritten
with the size of the reallocation of the previous block.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24011 a95241bf-73f2-0310-859d-f6bbb57e9c96
allocated on the stack, condition variable related structures would be
trashed, causing all kinds of problems. Fixes#1811 and #1812.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24009 a95241bf-73f2-0310-859d-f6bbb57e9c96
This eliminates the edge case where the grow thread would not be able to create
a new area because no memory could be allocated for the allocation of the area.
As this case cannot happen anymore, it is also not possible to deadlock in
memalign. Therefore the timeout (which would only have prevented the deadlock
but wouldn't have solved the edge case anyway) has been removed too.
Add options to dump the dedicated grow heap and to only print the current heap
count to the "heap" debugger command.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23994 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Implemented automatic syscall restarts:
- A syscall can indicate that it has been interrupted and can be
restarted by setting a respective bit in thread::flags. It can
store parameters it wants to be preserved for the restart in
thread::syscall_restart::parameters. Another thread::flags bit
indicates whether it has been restarted.
- handle_signals() clears the restart flag, if the handled signal
has a handler function installed and SA_RESTART is not set. Another
thread flag (THREAD_FLAGS_DONT_RESTART_SYSCALL) can prevent syscalls
from being restarted, even if they could be (not used yet, but we
might want to use it in resume_thread(), so that we stay
behaviorally compatible with BeOS).
- The architecture specific syscall handler restarts the syscall, if
the restart flag is set. Implemented for x86 only.
- Added some support functions in the private <syscall_restart.h> to
simplify the syscall restart code in the syscalls.
- Adjusted all syscalls that can potentially be restarted accordingly.
- _user_ioctl() sets new thread flag THREAD_FLAGS_IOCTL_SYSCALL while
calling the underlying FS's/driver's hook, so that syscall restarts
can also be supported there.
* thread_at_kernel_exit() invokes handle_signals() in a loop now, as
long as the latter indicates that the thread shall be suspended, so
that after waking up signals received in the meantime will be handled
before the thread returns to userland. Adjusted handle_signals()
accordingly -- when encountering a suspending signal we don't check
for further signals.
* Fixed sigsuspend(): Suspending the thread and rescheduling doesn't
result in the correct behavior. Instead we employ a temporary
condition variable and interruptably wait on it. The POSIX test
suite test passes, now.
* Made the switch_sem[_etc]() behavior on interruption consistent.
Depending on when the signal arrived (before the call or when already
waiting) the first semaphore would or wouldn't be released. Now we
consistently release it.
* Refactored _user_{read,write}[v]() syscalls. Use a common function for
either pair. The iovec version doesn't fail anymore, if anything could
be read/written at all. It also checks whether a complete vector
could be read/written, so that we won't skip data, if the underlying
FS/driver couldn't read/write more ATM.
* Some refactoring in the x86 syscall handler: The int 99 and sysenter
handlers use a common subroutine to avoid code duplication.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23983 a95241bf-73f2-0310-859d-f6bbb57e9c96
