القائمة
Instrument C/C++ with -finstrument-functions for execution tracing and Perfetto visualisation
التثبيت باستخدام Codex أو Claude انسخ هذا Prompt والصقه في Codex أو Claude أو مساعد آخر ليراجع صفحة Skill ويثبّتها لك.
استنادا إلى تصنيف SOC المهني
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| name | Function Call Tracing |
| description | Instrument C/C++ with -finstrument-functions for execution tracing and Perfetto visualisation |
| user-invocable | false |
| version | 1 |
| author | Claude |
| tags | ["tracing","profiling","instrumentation","perfetto"] |
Trace all function calls in C/C++ programs with per-thread logs and Perfetto visualization.
Captures function entry/exit, writes per-thread logs.
Build:
gcc -c -fPIC trace_instrument.c -o trace_instrument.o
gcc -shared trace_instrument.o -o libtrace.so -ldl -lpthread
Converts logs to Chrome JSON for Perfetto UI.
Build:
g++ -O3 -std=c++17 trace_to_perfetto.cpp -o trace_to_perfetto
CFLAGS += -finstrument-functions -g
LDFLAGS += -L. -ltrace -ldl -lpthread
make
export LD_LIBRARY_PATH=.:$LD_LIBRARY_PATH
./program
# Creates trace_<tid>.log files
./trace_to_perfetto trace_*.log -o trace.json
# Open trace.json in ui.perfetto.dev
[seq] [timestamp] [dots] [ENTRY|EXIT!] function_name
[0] [1.000000000] [ENTRY] main
[1] [1.000050000] . [ENTRY] helper
[2] [1.000100000] . [EXIT!] helper
[3] [1.000150000] [EXIT!] main
trace_instrument.c and trace_to_perfetto.cpp to project-finstrument-functions to CFLAGS-L. -ltrace -ldl -lpthread to LDFLAGSLD_LIBRARY_PATH and run./trace_to_perfetto trace_*.log -o trace.jsonMakefile: Add flags conditionally
ENABLE_TRACE ?= 0
ifeq ($(ENABLE_TRACE),1)
CFLAGS += -finstrument-functions -g
LDFLAGS += -L. -ltrace -ldl -lpthread
endif
CMake: Add option
option(ENABLE_TRACE "Enable tracing" OFF)
if(ENABLE_TRACE)
add_compile_options(-finstrument-functions -g)
link_libraries(trace dl pthread)
endif()
Function ENTRY → "B" (begin) event Function EXIT! → "E" (end) event All threads aligned by timestamp in single file.