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author | Aliaksey Kandratsenka <alkondratenko@gmail.com> | 2018-10-07 08:17:04 -0700 |
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committer | Aliaksey Kandratsenka <alkondratenko@gmail.com> | 2018-10-07 08:17:04 -0700 |
commit | 5eec9d0ae396aa90ebcb5756dfd0f3d101667490 (patch) | |
tree | 50c5d03e7d7fb0361de3e8ce1cfdc98d1627f5f7 | |
parent | 1561f0946fcc96d1384dae2a81f3ed111338a341 (diff) | |
download | gperftools-5eec9d0ae396aa90ebcb5756dfd0f3d101667490.tar.gz |
Drop not very portable and not very useful unwind benchmark.
-rw-r--r-- | .gitignore | 2 | ||||
-rwxr-xr-x | Makefile.am | 8 | ||||
-rw-r--r-- | benchmark/getcontext_light.cc | 60 | ||||
-rw-r--r-- | benchmark/unwind_bench.cc | 89 |
4 files changed, 0 insertions, 159 deletions
@@ -144,5 +144,3 @@ /test-driver /thread_dealloc_unittest /thread_dealloc_unittest.exe -/unwind_bench -/unwind_bench.exe diff --git a/Makefile.am b/Makefile.am index be1db83..2bca242 100755 --- a/Makefile.am +++ b/Makefile.am @@ -887,14 +887,6 @@ malloc_bench_shared_full_CXXFLAGS = $(PTHREAD_CFLAGS) $(AM_CXXFLAGS) $(NO_BUILTI malloc_bench_shared_full_LDFLAGS = $(PTHREAD_CFLAGS) $(TCMALLOC_FLAGS) malloc_bench_shared_full_LDADD = librun_benchmark.la libtcmalloc.la $(PTHREAD_LIBS) -if !OSX -noinst_PROGRAMS += unwind_bench -unwind_bench_SOURCES = benchmark/unwind_bench.cc benchmark/getcontext_light.cc -unwind_bench_CXXFLAGS = $(PTHREAD_CFLAGS) $(AM_CXXFLAGS) $(NO_BUILTIN_CXXFLAGS) -unwind_bench_LDFLAGS = $(PTHREAD_CFLAGS) $(TCMALLOC_FLAGS) -unwind_bench_LDADD = librun_benchmark.la libtcmalloc.la $(PTHREAD_LIBS) -endif !OSX - endif WITH_HEAP_PROFILER_OR_CHECKER binary_trees_SOURCES = benchmark/binary_trees.cc diff --git a/benchmark/getcontext_light.cc b/benchmark/getcontext_light.cc deleted file mode 100644 index e8ff8b3..0000000 --- a/benchmark/getcontext_light.cc +++ /dev/null @@ -1,60 +0,0 @@ -#include <ucontext.h> -#include <stddef.h> - -extern "C" void getcontext_light(ucontext_t *ctx); - -// clang's built-in asm cannot handle .set directives -#if defined(__GNUC__) && !defined(__llvm__) && defined(__x86_64) && defined(_LP64) - -#define R(r) offsetof(ucontext_t, uc_mcontext.gregs[r]) - -static __attribute__((used)) -void getcontext_tramp(ucontext_t *ctx) { - __asm__ __volatile__(".set oRBX, %c0\n" - ".set oRBP, %c1\n" - ".set oR12, %c2\n" - ".set oR13, %c3\n" - ".set oR14, %c4\n" - ".set oR15, %c5\n" - ".set oRIP, %c6\n" - ".set oRSP, %c7\n" - : : - "p" (R(REG_RBX)), - "p" (R(REG_RBP)), - "p" (R(REG_R12)), - "p" (R(REG_R13)), - "p" (R(REG_R14)), - "p" (R(REG_R15)), - "p" (R(REG_RIP)), - "p" (R(REG_RSP))); - getcontext_light(ctx); -} - -__asm__(".pushsection .text; .globl getcontext_light\n" - ".type getcontext_light, @function\n" -"getcontext_light:\n" - "\t.cfi_startproc\n" - "\tmovq %rbx, oRBX(%rdi)\n" - "\tmovq %rbp, oRBP(%rdi)\n" - "\tmovq %r12, oR12(%rdi)\n" - "\tmovq %r13, oR13(%rdi)\n" - "\tmovq %r14, oR14(%rdi)\n" - "\tmovq %r15, oR14(%rdi)\n" - - "\tmovq (%rsp), %rcx\n" - "\tmovq %rcx, oRIP(%rdi)\n" - "\tleaq 8(%rsp), %rcx\n" /* Exclude the return address. */ - "\tmovq %rcx, oRSP(%rdi)\n" - "\tret\n" - ".cfi_endproc\n" - ".size getcontext_light, .-getcontext_light\n" - ".popsection\n" - ); - -#else - -extern "C" void getcontext_light(ucontext_t *ctx) { - getcontext(ctx); -} - -#endif diff --git a/benchmark/unwind_bench.cc b/benchmark/unwind_bench.cc deleted file mode 100644 index 9c4e2f8..0000000 --- a/benchmark/unwind_bench.cc +++ /dev/null @@ -1,89 +0,0 @@ -// -*- Mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- -#include "config.h" - -#include "base/basictypes.h" -#include "gperftools/stacktrace.h" - -#include <stdlib.h> -#include <stdio.h> -#include <stdint.h> -#include <sys/ucontext.h> -#if HAVE_LIBUNWIND_H -#include <libunwind.h> -#endif - -#include "run_benchmark.h" - -extern "C" void getcontext_light(ucontext_t *ctx); - -#define MAX_FRAMES 1024 -static void *frames[MAX_FRAMES]; - -enum measure_mode { - MODE_NOOP, - MODE_WITH_CONTEXT, - MODE_WITHOUT_CONTEXT -}; - -static int ATTRIBUTE_NOINLINE measure_unwind(int maxlevel, int mode) { - int n; - - if (mode == MODE_NOOP) - return 0; - - if (mode == MODE_WITH_CONTEXT) { - ucontext_t uc; - getcontext_light(&uc); - n = GetStackTraceWithContext(frames, MAX_FRAMES, 0, &uc); - } else { - n = GetStackTrace(frames, MAX_FRAMES, 0); - } - if (n < maxlevel) { - fprintf(stderr, "Expected at least %d frames, got %d\n", maxlevel, n); - abort(); - } - return 0; -} - -static int ATTRIBUTE_NOINLINE frame_forcer(int rv) { - return rv; -} - -static int ATTRIBUTE_NOINLINE f1(int level, int maxlevel, int mode) { - if (level == maxlevel) - return frame_forcer(measure_unwind(maxlevel, mode)); - return frame_forcer(f1(level + 1, maxlevel, mode)); -} - -static void bench_unwind_no_op(long iterations, uintptr_t param) { - do { - f1(0, param, MODE_NOOP); - iterations -= param; - } while (iterations > 0); -} - -static void bench_unwind_context(long iterations, uintptr_t param) { - do { - f1(0, param, MODE_WITH_CONTEXT); - iterations -= param; - } while (iterations > 0); -} - -static void bench_unwind_no_context(long iterations, uintptr_t param) { - do { - f1(0, param, MODE_WITHOUT_CONTEXT); - iterations -= param; - } while (iterations > 0); -} - -int main(void) { - report_benchmark("unwind_no_op", bench_unwind_no_op, 100); - report_benchmark("unwind_context", bench_unwind_context, 100); - report_benchmark("unwind_no_context", bench_unwind_no_context, 100); - -//// TODO: somehow this fails at linking step. Figure out why this is missing -// #if HAVE_LIBUNWIND_H -// unw_set_caching_policy(unw_local_addr_space, UNW_CACHE_PER_THREAD); -// #endif - return 0; -} |