is enabled to set a per-heap get_caller() function.
* Added "-h <heap>" option to the "allocations_per_caller" command. If
given only the allocation for the specified heap are considered.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27097 a95241bf-73f2-0310-859d-f6bbb57e9c96
we must use {read|write}_pages() instead of {read|write}().
* This should fix accessing other file systems than BFS (ie. those that doesn't
have an io() function) like ext3 and FAT.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27088 a95241bf-73f2-0310-859d-f6bbb57e9c96
global cache list before locking it. This allows to get rid of the
block_cache::deleting field, as well as simplifies some code.
* This also fixes a possible deadlock I recently introduced (on destruction,
the locking order was wrong).
* Now uses an anonymous condition variable instead.
* Moved the block_cache initialization code into a dedicated method that will
now also fail in case the low resource handler couldn't be registered (as
pointed out by Salvatore).
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27074 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Fixed lock leak in Write().
* Fixed bug in _Commit(): swap_space_reserve() was fed with the wrong
value (could even be negative).
* swap_free_page_swap_space(): Removed incrementing of sAvailSwapSpace.
The function is only supposed to deallocate swap space, not to
unreserve it.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27071 a95241bf-73f2-0310-859d-f6bbb57e9c96
operation is available ATM, it will return NULL.
* _Finisher() does now re-schedule a request, if all of its operations
finished successfully, but there are still remaining bytes.
* _Scheduler() does now operate in two passes. First it creates as many
operations for a given request as possible, then it executes the
operations. This fixes bug #2644. The problem was that by creating and
executing the operations in a single loop, an operation could be
finished before the next one was added. The request would thus be
considered finished and the request owner be notified. This would
usually lead to the destruction of the request while it was still in
use.
* _Scheduler(): In case we don't have a DMA resource also advance the
request.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27070 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Moved memory unlocking from IORequest::OperationFinished() to
IORequest::NotifyFinished(). This way we can reschedule a request,
e.g. if we didn't have enough unused IOOperations at hand the first
time.
* Added some more debug output and asserts.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27069 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Some renaming: A location in a swap file where a page can be stored is
now called "slot" instead of "page" or "swap page".
* swap_slot_alloc(): Update the hint more correctly after allocating
slots at the hint.
* swap_space_reserve(): When less than the requested space could be
reserved, it always returned 0 and leaked the remaining pages.
* swap_file_delete(): sSwapFileListLock wasn't unlocked in error cases.
Use MutexLocker now.
* swap_free_page_swap_space(): sAvailSwapSpace wasn't updated.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27057 a95241bf-73f2-0310-859d-f6bbb57e9c96
be passed on to the IORequest. Most relevantly physical pages can now
be written directly by passing B_PHYSICAL_IO_REQUEST.
* Added VMCache::WriteAsync() which is supposed to write pages
asynchronously. The base class version version falls back to the
synchronous Write(). Only VMVnodeCache implements WriteAsync() ATM,
VMAnonymousCache (swap support) still has to be adjusted accordingly.
* write_page() doesn't need to map the page anymore as it can write the
physical page directly.
* Modified the page writer to write pages asynchronously. This shouldn't
have any noticeable effect yet. It will though as soon as the I/O
scheduler reorders I/O operations.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27056 a95241bf-73f2-0310-859d-f6bbb57e9c96
writes the given page iovecs asynchronously. The new class
AsyncIOCallback is used to inform the caller when the request has been
finished.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27055 a95241bf-73f2-0310-859d-f6bbb57e9c96
deleted automatically when it's finished.
* Added IORequest::Create() for creating a IORequest on the heap
(respectively the VIP heap).
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27054 a95241bf-73f2-0310-859d-f6bbb57e9c96
many bytes to be read/written, which, among other things, could trigger
an assert in the IORequest code:
* In case of a partial (i.e. non-block-aligned) begin, transferLeft was
not adjusted correctly.
* The main loop was lacking a transferLeft check.
* Main loop: When finally using a bounce buffer, the unrestricted vec
length was used as base length for the bounce buffer.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27042 a95241bf-73f2-0310-859d-f6bbb57e9c96
stuff at all, anymore.
* Removed now unused get_device_for_path().
* unpublish_driver() now only deletes the device if unpublishing actually
worked out okay.
* Minor cleanup.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27038 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Added inode ID member to BaseDevice to make this possible.
* Removed unused and unmaintained legacy_driver::devices_published field.
* Implemented legacy driver's unpublish_driver().
* Reenabled legacy driver reloading on changes.
* Renamed devfs_driver_{added|removed}() to driver_{added|removed}(), and
made them private.
* Simplified deletion of device_node lists (no need to use an iterator here),
added device unpublishing.
* Minor cleanup.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27033 a95241bf-73f2-0310-859d-f6bbb57e9c96
Ingo suggestions: instead of having one global sem_undo list,
we now have two local list, one per semaphore set and one per team
which is held in its xsi_sem_context structure, along with a mutex.
A mutex has also been added to the semaphore set class in order to
protect the local list, but also in order to (hopefully) improve
concurrency.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26993 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Moved the static functions to the beginning of the file.
* Renamed several variables for more clarity, particularly
offset/cacheOffset to index/pageIndex in case where the unit is pages.
* _SwapBlock{Build,Free}() can deal with a range of pages now, which
should be more efficient.
* Additional checks/panics in swap_page_alloc().
* swap_file_add(): Wrong byte count was used when allocating and
clearing the bitmap.
* swap_page_alloc(): Fixed off-by-one check. The last page of the swap
file could not be used.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26975 a95241bf-73f2-0310-859d-f6bbb57e9c96
our dma_restrictions structure (but we're using blocks instead of bytes,
since unlike the block size, the restrictions attributes are constant).
* We might want to use blocks for the dma_restrictions structure as well in
the future...
* Fixed another bug in the device_node variant of DMAResource::Init(): the max
segment size was specified in blocks as well.
* Removed the "hardcode" block_io module and header.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26973 a95241bf-73f2-0310-859d-f6bbb57e9c96
heap.
* Allocate IOBuffers, IORequests, and cookies on the VIP I/O heap, if
necessary.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26969 a95241bf-73f2-0310-859d-f6bbb57e9c96
heap_class object now. Removed unused heap_allocator::heap_class.
* Made heap_class, heap_create_allocator(), heap_memalign(), heap_free()
public, so that a specialized allocator can be used elsewhere in the
kernel.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26965 a95241bf-73f2-0310-859d-f6bbb57e9c96
tracing entry classes.
* Added new "scheduler" command, available when scheduler tracing is
enabled. It analyzes the tracing entries for a given thread and prints
scheduling statistics for that thread. Should hopefully help to
understand the poor scheduling latencies in certain cases.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26956 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Fixed TraceEntryIterator::Current(): If fEntry was NULL, it would
return 0x4.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26955 a95241bf-73f2-0310-859d-f6bbb57e9c96
(fault address, pc, read/write) when a page fault occurs, and print them
in case this caused the termination of a debugger command.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26949 a95241bf-73f2-0310-859d-f6bbb57e9c96
marked modified again, so that we don't lose its data when someone
decides to steal it.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26939 a95241bf-73f2-0310-859d-f6bbb57e9c96
now also free swap space assigned to pages that are rather active.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26938 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Added functions swap_free_page_swap_space(), swap_available_pages(),
and swap_total_swap_pages(). They will be used by the page daemon
code.
* Free allocated swap space in the VMAnonymousCache destructor.
* Write(): First free swap space assigned to the pages to be written
(was leaked before) and update fAllocatedSwapSize upfront. Both is now
done with the cache locked, as it should be.
* Fixes several instance where the cache offset in bytes was used
instead of in pages.
* Print the correct error when _kern_write_stat() fails.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26926 a95241bf-73f2-0310-859d-f6bbb57e9c96
if after the main loop the transfer is already block aligned, we still
have to check whether the last vec is a bounce buffer that is shorter
than a complete block, but exceeds the original end of the request. If
so, we have to cut back to the previous block and add a block-sized
bounce buffer instead. Actually that's almost the same case as when the
transfer length is not yet block aligned, and thus we let the same code
handle it. Fixes bug #2584.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26910 a95241bf-73f2-0310-859d-f6bbb57e9c96
loop.
* This is probably the cause for file corruptions as well as bug #2595; will
have another look tomorrow.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26905 a95241bf-73f2-0310-859d-f6bbb57e9c96
* segmentCount was potentially set incorrectly. It could be too big,
since we considered all vecs, not only those remaining.
* The main loop condition was incorrect. This would lead to too few
DMABuffer vecs (or none at all) for any but the first IOOperation of a
request. Should fix#2586.
* Correctly offset by vecIndex in debug output.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26881 a95241bf-73f2-0310-859d-f6bbb57e9c96
specifying the protection of each page (4 bits per page).
* Added no-op implementation of posix_madvise().
* Replaced a few "addr_t size" parameters by "size_t size".
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26871 a95241bf-73f2-0310-859d-f6bbb57e9c96
with the VMCache lock held, and WriteModified() locks itself.
* Added an assertion that the lock is held when calling that method.
* This fixes a KDL as soon as you would have used O_NOCACHE with a file that
had already some pages read in.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26864 a95241bf-73f2-0310-859d-f6bbb57e9c96
* dir_read() now takes into account that we may have read more than one dir
entry, and calls fix_dirent() for each of them.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26859 a95241bf-73f2-0310-859d-f6bbb57e9c96
* If a segment violation occurs, we do now check whether the thread in
question has a handler for SIGSEGV. If so, we just send it the signal.
Otherwise we notify the debugger as before.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26851 a95241bf-73f2-0310-859d-f6bbb57e9c96
