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author | csilvers <csilvers@6b5cf1ce-ec42-a296-1ba9-69fdba395a50> | 2009-09-11 18:42:32 +0000 |
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committer | csilvers <csilvers@6b5cf1ce-ec42-a296-1ba9-69fdba395a50> | 2009-09-11 18:42:32 +0000 |
commit | 19dfa9e3733155e57406fbd082273eb53cb2750e (patch) | |
tree | 8c000b5035acf1bd01cb7208972e128bbd98e4b2 /m4 | |
parent | 2197cc670204c583bba3903b765c77620f349609 (diff) | |
download | gperftools-19dfa9e3733155e57406fbd082273eb53cb2750e.tar.gz |
Thu Sep 10 13:51:15 2009 Google Inc. <opensource@google.com>
* google-perftools: version 1.4 release
* Add debugallocation library, to catch memory leaks, stomping, etc
* Add --raw mode to allow for delayed processing of pprof files
* Use less memory when reading CPU profiles
* New environment variables to control kernel-allocs (sbrk, memfs, etc)
* Add MarkThreadBusy(): performance improvement
* Remove static thread-cache-size code; all is dynamic now
* Add new HiddenPointer class to heap checker
* BUGFIX: pvalloc(0) allocates now (found by new debugalloc library)
* BUGFIX: valloc test (not implementation) no longer overruns memory
* BUGFIX: GetHeapProfile no longer deadlocks
* BUGFIX: Support unmapping memory regions before main
* BUGFIX: Fix some malloc-stats formatting
* BUGFIX: Don't crash as often when freeing libc-allocated memory
* BUGFIX: Deal better with incorrect PPROF_PATH when symbolizing
* BUGFIX: weaken new/delete/etc in addition to malloc/free/etc
* BUGFIX: Fix return value of GetAllocatedSize
* PORTING: Fix mmap-#define problem on some 64-bit systems
* PORTING: Call ranlib again (some OS X versions need it)
* PORTING: Fix a leak when building with LLVM
* PORTING: Remove some unneeded bash-ishs from testing scripts
* WINDOWS: Support library unloading as well as loading
* WINDOWS/BUGFIX: Set page to 'xrw' instead of 'rw' when patching
git-svn-id: http://gperftools.googlecode.com/svn/trunk@76 6b5cf1ce-ec42-a296-1ba9-69fdba395a50
Diffstat (limited to 'm4')
-rw-r--r-- | m4/install_prefix.m4 | 2 | ||||
-rw-r--r-- | m4/pc_from_ucontext.m4 | 56 |
2 files changed, 57 insertions, 1 deletions
diff --git a/m4/install_prefix.m4 b/m4/install_prefix.m4 index d4afc93..ef33f42 100644 --- a/m4/install_prefix.m4 +++ b/m4/install_prefix.m4 @@ -1,6 +1,6 @@ AC_DEFUN([AC_INSTALL_PREFIX], [ac_cv_install_prefix="$prefix"; - if test x"$ac_cv_install_prefix" == x"NONE" ; then + if test x"$ac_cv_install_prefix" = x"NONE" ; then ac_cv_install_prefix="$ac_default_prefix"; fi AC_DEFINE_UNQUOTED(INSTALL_PREFIX, "$ac_cv_install_prefix", diff --git a/m4/pc_from_ucontext.m4 b/m4/pc_from_ucontext.m4 new file mode 100644 index 0000000..8c4c5ce --- /dev/null +++ b/m4/pc_from_ucontext.m4 @@ -0,0 +1,56 @@ +# We want to access the "PC" (Program Counter) register from a struct +# ucontext. Every system has its own way of doing that. We try all the +# possibilities we know about. Note REG_PC should come first (REG_RIP +# is also defined on solaris, but does the wrong thing). + +# OpenBSD doesn't have ucontext.h, but we can get PC from ucontext_t +# by using signal.h. + +AC_DEFUN([AC_PC_FROM_UCONTEXT], + [AC_MSG_CHECKING([how to access the program counter from a struct ucontext]) + pc_fields=" uc_mcontext.gregs[[REG_PC]]" # Solaris x86 (32 + 64 bit) + pc_fields="$pc_fields uc_mcontext.gregs[[REG_EIP]]" # Linux (i386) + pc_fields="$pc_fields uc_mcontext.gregs[[REG_RIP]]" # Linux (x86_64) + pc_fields="$pc_fields uc_mcontext.sc_ip" # Linux (ia64) + pc_fields="$pc_fields uc_mcontext.uc_regs->gregs[[PT_NIP]]" # Linux (ppc) + pc_fields="$pc_fields uc_mcontext.gregs[[R15]]" # Linux (arm old [untested]) + pc_fields="$pc_fields uc_mcontext.arm_pc" # Linux (arm new [untested]) + pc_fields="$pc_fields uc_mcontext.mc_eip" # FreeBSD (i386) + pc_fields="$pc_fields uc_mcontext.mc_rip" # FreeBSD (x86_64 [untested]) + pc_fields="$pc_fields uc_mcontext.__gregs[[_REG_EIP]]" # NetBSD (i386) + pc_fields="$pc_fields uc_mcontext.__gregs[[_REG_RIP]]" # NetBSD (x86_64) + pc_fields="$pc_fields uc_mcontext->ss.eip" # OS X (i386, <=10.4) + pc_fields="$pc_fields uc_mcontext->__ss.__eip" # OS X (i386, >=10.5) + pc_fields="$pc_fields uc_mcontext->ss.rip" # OS X (x86_64) + pc_fields="$pc_fields uc_mcontext->__ss.__rip" # OS X (>=10.5 [untested]) + pc_fields="$pc_fields uc_mcontext->ss.srr0" # OS X (ppc, ppc64 [untested]) + pc_fields="$pc_fields uc_mcontext->__ss.__srr0" # OS X (>=10.5 [untested]) + pc_field_found=false + for pc_field in $pc_fields; do + if ! $pc_field_found; then + AC_TRY_COMPILE([#define _GNU_SOURCE 1 + #include <ucontext.h>], + [ucontext_t u; return u.$pc_field == 0;], + AC_DEFINE_UNQUOTED(PC_FROM_UCONTEXT, $pc_field, + How to access the PC from a struct ucontext) + AC_MSG_RESULT([$pc_field]) + pc_field_found=true) + fi + done + if ! $pc_field_found; then + pc_fields=" sc_eip" # OpenBSD (i386) + pc_fields="$pc_fields sc_rip" # OpenBSD (x86_64) + for pc_field in $pc_fields; do + if ! $pc_field_found; then + AC_TRY_COMPILE([#include <signal.h>], + [ucontext_t u; return u.$pc_field == 0;], + AC_DEFINE_UNQUOTED(PC_FROM_UCONTEXT, $pc_field, + How to access the PC from a struct ucontext) + AC_MSG_RESULT([$pc_field]) + pc_field_found=true) + fi + done + fi + if ! $pc_field_found; then + AC_MSG_WARN(Could not find the PC. Will not output failed addresses...) + fi]) |