[Android ATrace] #android #jni #native #systrace #atrace #c++

test.cpp

#include <dlfcn.h>

void (*ATrace_beginSection) (const char *sectionName);
void *(*ATrace_endSection) (void);
void *(*ATrace_isEnabled) (void);

typedef void (*fp_ATrace_beginSection) (const char *sectionName);
typedef void *(*fp_ATrace_endSection) (void);
typedef void *(*fp_ATrace_isEnabled) (void);

void InitializeATrace()
{
    void *lib = dlopen("libandroid.so", RTLD_NOW | RTLD_LOCAL);
    if (lib != NULL)
    {
        ATrace_beginSection =
                reinterpret_cast<fp_ATrace_beginSection >(
                        dlsym(lib, "ATrace_beginSection"));
        ATrace_endSection =
                reinterpret_cast<fp_ATrace_endSection >(
                        dlsym(lib, "ATrace_endSection"));
        ATrace_isEnabled =
                reinterpret_cast<fp_ATrace_isEnabled >(
                        dlsym(lib, "ATrace_isEnabled"));
        LOGI("Composite Plugin:", "ATrace Profiling Initialized");
    }
    else
    {
        LOGE("Composite Plugin:", "Failed to open libandroid.so");
    }
}

// first step
InitializeATrace();

// add tag
ATrace_beginSection("test tag");
...
ATrace_endSection();