dirent without the name first, and will then check if the d_reclen member
is valid before copying the name.
* This shows the problem with the FAT file system that was revealed by r26859.
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synchronously; we use the resource resizer instead. This avoids another
potential deadlock.
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* Added a second kernel daemon service, resource resizer, which is
mainly supposed to be used for resizing allocations asynchrounously.
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without object depot it should be complete. For the other stuff
internal_alloc() would need to pass the flag on to block_alloc(), but
that isn't possible yet.
* Adjusted the low memory handler to respect the minimum object reserve
of the object caches.
The swap_test_heap test does seem to pass reliably with 128 MB RAM and
128 MB allocation, now. It's quite slow, though. Particularly while the
allocation is filled, the system is completely unusable.
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create_area_etc().
* When the new flag CREATE_AREA_DONT_WAIT is specified, the functions
don't wait for memory or pages to become available. They fail
immediately instead.
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eventually the VIP heap would be exhausted.
* WriteAsync() didn't call the provided callback when an error occurred
before invoking vfs_asynchronous_write_pages(). The page writer would
get stuck in those cases.
* The object cache used for the swap blocks does now use the
asynchronous resizing feature to avoid deadlocks.
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of free objects an object cache should try to have ready. If the number
of free objects drops below the threshold, a new urgent priority thread
is asked to asynchronously resize the object cache (pretty similar to
the heap grower thread). Such a mechanism is necessary for code paths
that are supposed to free pages, but may need memory themselves (like
the swap support).
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calls the method unchecked, and the buffer can actually be NULL, if
Init() failed.
* panic() when running out of VIP memory, at least when KDEBUG is
set.
* Use heap_set_get_caller() for the VIP heap, so the heap leak checking
produces useful caller addresses.
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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.
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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.
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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).
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* 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.
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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.
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default).
* Enlarged the serial buffer that is handed over to the kernel to 8192 bytes.
* Minor cleanup.
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* 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.
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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.
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deleted automatically when it's finished.
* Added IORequest::Create() for creating a IORequest on the heap
(respectively the VIP heap).
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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.
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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
maximal size.
* Turned off debug output accidently enabled with the last commit.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27006 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
the kernel settings. Settings that were checked in the kernel (like on-screen
debug output) didn't work anymore, because when handing the settings over to
the kernel it would have copied only the old size part of the safemode file.
* Add a newline when the kernel and safemode settings are combined. Otherwise
the first safemode and last kernel setting would get lost if the kernel
settings file didn't end with a newline.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26992 a95241bf-73f2-0310-859d-f6bbb57e9c96
currently points to /etc for the system, and dedicated "data" directories
for common/user (the system directory should get a dedicated "data", too,
though).
* Added B_USER_CACHE_DIRECTORY (in config/cache).
* These additions were discussed some years ago, but I just had a good reason
to use them :-)
* Coding style cleanup.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26990 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
