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* posix: clean up shared memory codeevan@chromium.org2009-09-161-2/+3
| | | | | | | | | | | | | At first I rewrote this to use the shm_*() family of functions, but that doesn't work on OS X. Now I've just cleaned up some bits and added an extra print to help with the below bug. BUG=16371 Review URL: http://codereview.chromium.org/204024 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@26361 0039d316-1c4b-4281-b951-d872f2087c98
* Fix a memory leak in ResourceDispatcherhclam@chromium.org2009-05-181-0/+3
| | | | | | | | | | | | When we delete a ResourceLoaderBridge before OnCompletedRequest is received, bad things happen. There's a lot of leaks at the following points: 1. OnMessageReceived ignores the message. 2. RemovePendingRequest removes it's internal deferred_message_queue. But ViewHostMsg_Resource_DataReceived is not POD. We should also close the shared memory handle inside it. Review URL: http://codereview.chromium.org/115396 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@16297 0039d316-1c4b-4281-b951-d872f2087c98
* Remove unused variable from POSIX SharedMemory implementation.thestig@chromium.org2009-04-041-1/+1
| | | | | | Review URL: http://codereview.chromium.org/62027 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@13129 0039d316-1c4b-4281-b951-d872f2087c98
* Port visitedlink tests to Linux. Also make them pass on Linux, whichphajdan.jr@chromium.org2009-03-161-0/+3
| | | | | | | | | | | | | may fix the attached bug. The problem was that the debug check was in wrong place (too early, before every member was initialized), so it failed in the test. BUG=8710 Review URL: http://codereview.chromium.org/48005 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@11734 0039d316-1c4b-4281-b951-d872f2087c98
* Bitmap transportagl@chromium.org2009-02-201-2/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch reworks bitmap transport on all platforms. Linux and Mac are switched from serialising bitmaps over the IPC channel to using shared memory. All platforms gain a shared memory mapping cache on the host side. The concept of a TransportDIB (device independent bitmap) is added to encapsulate most of the platform specifics. On Linux, we use SysV shared memory. This is because X shared pixmaps, which predate POSIX SHM, can only use SysV. By using SysV between renderer and browser, we open up the possibility to map the shared memory directly from the renderer to the X server. On Mac, we use POSIX shared memory. However, since this needs filesystem access and the Mac renderer is sandboxed from the filesystem, we add two new messages from renderer -> browser: The first, AllocTransportDIB, synchronously creates a transport DIB in the browser and passes a handle back to the renderer. The second, FreeTransportDIB, asynchronously, notifies the browser that it may close its handle to the shared memory region. On Mac, the shared memory regions are identified by their inode numbers on the wire. This means that the browser must keep handles open to all the allocated shared memory regions (since an inode number is insufficient to map the region). The alternative design is that the renderer passes the file descriptor with each paint operation. Since passing file descriptors is special case in the code, I felt that it would be best to minimise their use. Creating and freeing transport DIBs are relatively rare operations relative to paints and scrolls. On Windows, most of the code remains the same, except that Windows now uses the mapping cache added in this patch. This allows the browser to maintain a shared memory mapping for a transport DIB over several paints. Previously it mapped and unmapped for every operation, causing lots of TLB and VM churn. Review URL: http://codereview.chromium.org/21485 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@10071 0039d316-1c4b-4281-b951-d872f2087c98
* POSIX: Transfer network data using shared memoryagl@chromium.org2009-02-111-3/+12
| | | | | | | | | | | | | | | | | | | | | | This patch adds the long planned support for sharing memory on POSIX by transporting file descriptors. It largely builds on the shared memory cleanup work by jrg. We move FileDescriptor out of chrome/common/file_descriptor_posix.h and into base/file_descriptor_posix.h. Since all that's left in the chrome/common verion is the DescriptorSet, those files are renamed to descriptor_set.[h|cc]. The SharedMemoryHandle on POSIX then becomes a typedef to a FileDescriptor and thus can be serialised over IPC. After that, it's mostly a case of cleaning up those snippets of code which considered SharedMemoryHandles to be scaler values. Review URL: http://codereview.chromium.org/21208 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@9580 0039d316-1c4b-4281-b951-d872f2087c98
* Fix a browser crash when the async resource handler keeps anrvargas@google.com2009-02-111-0/+2
| | | | | | | | | | | | | | | | IOBuffer after a failed attempt to send the data to a (now gone) renderer. The shared memory section is unmapped so the buffer must not be kept around and possibly re-used. I'm also fixing a leak reported by purify. BUG=7487 BUG=7374 Review URL: http://codereview.chromium.org/21222 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@9540 0039d316-1c4b-4281-b951-d872f2087c98
* Transition POSIX shmem to use lockf(), not semaphores. Eliminatesjrg@chromium.org2009-02-051-7/+12
| | | | | | | | | | | | | | resource leak possibility; allows complete sharing of shmem by fd without name. Add actual multiprocess shmem/locking unit test. Fix flaky shmem unit test. agl: please review. Amanda: please look over as you've been here before. Review URL: http://codereview.chromium.org/21063 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@9235 0039d316-1c4b-4281-b951-d872f2087c98
* Properly honor base::SharedMemory semantics for name="" to meanjrg@chromium.org2009-02-041-1/+16
| | | | | | | | | | | | new/private shared memory on POSIX. Transition base::SharedMemory implementation to file/mmap() to prevent leaking of wired kernel resources and allow easier cleanup. Enable one more shared_memory unit test for POSIX. Enable stats_table_unittest.cc for Mac, and modify it so it cleans up. Review URL: http://codereview.chromium.org/19724 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@9114 0039d316-1c4b-4281-b951-d872f2087c98
* Don't include system headers inside a namespace.evanm@google.com2008-11-141-1/+6
| | | | | | | Review URL: http://codereview.chromium.org/10950 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@5498 0039d316-1c4b-4281-b951-d872f2087c98
* Add Terminate() to the Process object, have RenderProcessHost use this to ↵brettw@google.com2008-11-141-2/+5
| | | | | | | | | | avoid some more Windows specific code. Move Process and SharedMemory into the base namespace (most changes). Review URL: http://codereview.chromium.org/10895 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@5446 0039d316-1c4b-4281-b951-d872f2087c98
* Reduce header dependencies.evanm@google.com2008-10-221-8/+9
| | | | | | | | | Random files in V8Bindings were getting rebuilt when I touched process_util.h. I tracked it down to stats_table.h and shared_memory.h. This change cuts down some dependencies there; more could be removed if we made some of our FooHandle typedefs into abstract data types instead. Review URL: http://codereview.chromium.org/7307 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@3770 0039d316-1c4b-4281-b951-d872f2087c98
* Use a more compact license header in source files.license.bot2008-08-241-28/+4
| | | | git-svn-id: svn://svn.chromium.org/chrome/trunk/src@1287 0039d316-1c4b-4281-b951-d872f2087c98
* Revving the shared memory to the comments on the list.avi@google.com2008-08-131-0/+3
| | | | git-svn-id: svn://svn.chromium.org/chrome/trunk/src@824 0039d316-1c4b-4281-b951-d872f2087c98
* The Posix shared memory implementation.avi@google.com2008-08-121-1/+2
| | | | git-svn-id: svn://svn.chromium.org/chrome/trunk/src@742 0039d316-1c4b-4281-b951-d872f2087c98
* Add defines for the size of wchar_t to build_config.h. Use this in places ↵brettw@google.com2008-08-071-5/+6
| | | | | | | | | | where we currently have an OS-specific check. Remove all WIN32 ifdefs from base and replace them with proper defined(OS...). I also fixed random style bits when I encountered them. I made major style fixes to string16. git-svn-id: svn://svn.chromium.org/chrome/trunk/src@524 0039d316-1c4b-4281-b951-d872f2087c98
* Add base to the repository.initial.commit2008-07-261-0/+169
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@8 0039d316-1c4b-4281-b951-d872f2087c98
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