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| author | Yabin Cui <yabinc@google.com> | 2018-03-20 15:29:03 -0700 |
|---|---|---|
| committer | Yabin Cui <yabinc@google.com> | 2018-03-21 11:25:08 -0700 |
| commit | cdc11a390138765046c8d730708b86c63aa3c488 (patch) | |
| tree | 922d8d40634818769985fff131605ae35fbf6c26 /simpleperf/OfflineUnwinder.cpp | |
| parent | dd4f07b1396db2b95d9dddad03b743eaca462c53 (diff) | |
| download | extras-cdc11a390138765046c8d730708b86c63aa3c488.tar.gz | |
simpleperf: support profiling jited java code.
1. For each jit symfile, generate a Mmap2Record with a special flag
PROT_JIT_SYMFILE_MAP.
2. Call ReadMmapEventData() before dumping jit Mmap2Records, to keep
the order of samples and mmap records.
3. Handle finding symbols from maps with PROT_JIT_SYMFILE_MAP flags.
4. Pass PROT_JIT_SYMFILE_MAP flag to libunwindstack, to unwind
through jited methods.
Bug: http://b/73127105
Test: run simpleperf manually.
Test: run simpleperf_unit_test.
Change-Id: I2b2f77ff457f7eb2f10193e987a181e4791a29ee
Diffstat (limited to 'simpleperf/OfflineUnwinder.cpp')
| -rw-r--r-- | simpleperf/OfflineUnwinder.cpp | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/simpleperf/OfflineUnwinder.cpp b/simpleperf/OfflineUnwinder.cpp index 9d561447..ebb0be9f 100644 --- a/simpleperf/OfflineUnwinder.cpp +++ b/simpleperf/OfflineUnwinder.cpp @@ -23,6 +23,7 @@ #include <unwindstack/MachineArm64.h> #include <unwindstack/MachineX86.h> #include <unwindstack/MachineX86_64.h> +#include <unwindstack/Maps.h> #include <unwindstack/Regs.h> #include <unwindstack/RegsArm.h> #include <unwindstack/RegsArm64.h> @@ -38,6 +39,10 @@ #include "read_apk.h" #include "thread_tree.h" +static_assert(simpleperf::map_flags::PROT_JIT_SYMFILE_MAP == PROT_JIT_SYMFILE_MAP, ""); +static_assert(simpleperf::map_flags::PROT_JIT_SYMFILE_MAP == + unwindstack::MAPS_FLAGS_JIT_SYMFILE_MAP, ""); + namespace simpleperf { static unwindstack::Regs* GetBacktraceRegs(const RegSet& regs) { @@ -154,7 +159,7 @@ bool OfflineUnwinder::UnwindCallChain(const ThreadEntry& thread, const RegSet& r } } } - bt_map.flags = PROT_READ | PROT_EXEC; + bt_map.flags = PROT_READ | PROT_EXEC | map->flags; } cached_map.map.reset(BacktraceMap::CreateOffline(thread.pid, bt_maps)); if (!cached_map.map) { |