asterisk

Commit Graph

Author	SHA1	Message	Date
Russell Bryant	2f41cceb1f	Add some improvements to lock debugging. These changes take effect with DEBUG_THREADS enabled and provide the following: * This will keep track of which locks are held by which thread as well as which lock a thread is waiting for in a thread-local data structure. A reference to this structure is available on the stack in the dummy_start() function, which is the common entry point for all threads. This information can be easily retrieved using gdb if you switch to the dummy_start() stack frame of any thread and print the contents of the lock_info variable. * All of the thread-local structures for keeping track of this lock information are also stored in a list so that the information can be dumped to the CLI using the "core show locks" CLI command. This introduces a little bit of a performance hit as it requires additional underlying locking operations inside of every lock/unlock on an ast_mutex. However, the benefits of having this information available at the CLI is huge, especially considering this is only done in DEBUG_THREADS mode. It means that in most cases where we debug deadlocks, we no longer have to request access to the machine to analyze the contents of ast_mutex_t structures. We can now just ask them to get the output of "core show locks", which gives us all of the information we needed in most cases. I also had to make some additional changes to astmm.c to make this work when both MALLOC_DEBUG and DEBUG_THREADS are enabled. I disabled tracking of one of the locks in astmm.c because it gets used inside the replacement memory allocation routines, and the lock tracking code allocates memory. This caused infinite recursion. git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@78095 65c4cc65-6c06-0410-ace0-fbb531ad65f3	18 years ago
Joshua Colp	50f951764f	Add missing newlines for two memory CLI commands. git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@50820 65c4cc65-6c06-0410-ace0-fbb531ad65f3	19 years ago
Kevin P. Fleming	b2c8abbc6d	allow 'show memory' and 'show memory summary' to distinguish memory allocations that were done for caching purposes, so they don't look like memory leaks git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@48987 65c4cc65-6c06-0410-ace0-fbb531ad65f3	19 years ago
Russell Bryant	97502fdec0	Fix the total allocation count and total byte count in the memory summary git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@43383 65c4cc65-6c06-0410-ace0-fbb531ad65f3	19 years ago
Russell Bryant	28ffdcc783	Fix the memory summary so that it doesn't print the first file in the list over and over again. git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@43375 65c4cc65-6c06-0410-ace0-fbb531ad65f3	19 years ago
Russell Bryant	6f442c4a3c	fix some breakage from the CLI command changes git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@43372 65c4cc65-6c06-0410-ace0-fbb531ad65f3	19 years ago
Kevin P. Fleming	fcb999c01c	merge qwell's CLI verbification work git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@43212 65c4cc65-6c06-0410-ace0-fbb531ad65f3	19 years ago
Russell Bryant	5d3869a1c8	various cleanups, including ... - Create an astmm_log() macro that logs the same message to both stderr as well as the mmlog file if it is open instead of duplicating the code everywhere. - Use for loops for list traversals instead of while loops - reduce nesting - ensure locking isn't put around more than is necessary - localize a struct definition - change the limit of the path to the mmlog to PATH_MAX instead of 80 git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@40780 65c4cc65-6c06-0410-ace0-fbb531ad65f3	19 years ago
Kevin P. Fleming	0a27d8bfe5	merge new_loader_completion branch, including (at least): - restructured build tree and makefiles to eliminate recursion problems - support for embedded modules - support for static builds - simpler cross-compilation support - simpler module/loader interface (no exported symbols) git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@40722 65c4cc65-6c06-0410-ace0-fbb531ad65f3	19 years ago

9 Commits (1f62b98d45c38e1185dbb9d51a0343972f4cbfe0)