bfec3a315000e9fcfc8e2d3fcef25e747e3d2053 |
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25-May-2012 |
Elliott Hughes <enh@google.com> |
Add basic Darwin support to libcorkscrew. This might not seem like much, but it's already better than Mac OS' backtrace(3). (cherry picked from commit 2a46f6293f19b9d6100187fbd53088088e671b88) Change-Id: I197b06c4c19f728ad6f194b2f473bd9dcd99b8a6
/system/core/libcorkscrew/ptrace.c
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0632ad45776aa7651bdcef1cd5728ad29025ab31 |
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20-Mar-2013 |
Liangtao Gao <gliangtao@gmail.com> |
debuggerd: Fix minor memory leak free_ptrace_context(context) doesn't free(context), which leaks the memory allocated to context. Change-Id: Ic199b257aefc9a05ec2d902958efa8a57a601fb1 Signed-off-by: Liangtao Gao <gliangtao@gmail.com>
/system/core/libcorkscrew/ptrace.c
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420a7fa82d0fba6516d76d6024728de010b1cb8d |
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18-May-2012 |
Elliott Hughes <enh@google.com> |
Add missing #includes. Change-Id: I81405d638f80fc96874ea0b21af3538229aa38a7
/system/core/libcorkscrew/ptrace.c
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f0c5872637a63e28e3cd314cfc915c07f76df9c6 |
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04-Nov-2011 |
Jeff Brown <jeffbrown@google.com> |
Improve stack unwinder robustness. Keep track of whether memory maps are readable. Use the information in try_get_word to try to avoid accidentally dereferencing an invalid pointer within the current process. (Note that I haven't ever seen that happen during normal unwinding, but it pays to be a little more careful.) Refactored try_get_word a little to make it easier to pass it the needed state for validation checks by way of a little memory_t struct. Improved how the memory map for the current process is cached. This is important because we need up to date information about readable maps. Use a 5 second cache expiration. Improved the PC -> LR fallback logic in the unwinder so we can eke out an extra frame sometimes. Fixed a bug reading ELF program headers. The phnum & phentsize fields are half-words. We were incorrectly interpreting phnum as a whole word. Used android_atomic_* operations carefully in the unwinder to prevent possible memory races between the dumper and the dumpee. This was highly unlikely (or even impossible due to the presence of other barriers along the way) but the code is clearer now about its invariants. Fixed a bug in debuggerd where the pid was being passed to have its stack dump taken instead of the tid, resulting in short stacks because ptrace couldn't read the data if pid != tid. Did a full sweep to ensure that we use pid / tid correctly everywhere. Ported old code from debuggerd to rewind the program counter back one instruction so that it points to the branch instruction itself instead of the return address. Change-Id: Icc4eb08320052975a4ae7f0f5f0ac9308a2d33d7
/system/core/libcorkscrew/ptrace.c
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69f4cd7f5add7a7c7f5915e5292aab7eb2a42e9f |
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20-Oct-2011 |
Steve Block <steveblock@google.com> |
Rename (IF_)LOGV(_IF) to (IF_)ALOGV(_IF) DO NOT MERGE Bug: 5449033 Change-Id: Ib453f869977a6e909095a578bbf0420851f887d2
/system/core/libcorkscrew/ptrace.c
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501edd29b823ce1301d2effdd3a9e4b6e2b20b76 |
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20-Oct-2011 |
Jeff Brown <jeffbrown@google.com> |
Add a new library for collecting stack traces. Supports collecting the stack trace of the current thread, another thread in the same process, or a thread in a different process (using ptrace). Change-Id: Ica2594e4436edde4ceb7bcc3d78e6c31a7902cbf
/system/core/libcorkscrew/ptrace.c
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