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perf does not recognize too short function name

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This commit is contained in:
MITSUNARI Shigeo 2020-01-27 14:48:54 +09:00
parent 6cc0f4dfc7
commit 34f797e88f
2 changed files with 12 additions and 6 deletions
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4
sample/profiler.cpp
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@ -6,7 +6,6 @@
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#define XBYAK_NO_OP_NAMES
#include <xbyak/xbyak_util.h>
const int N = 3000000;
@ -70,9 +69,6 @@ int main(int argc, char *argv[])
Xbyak::util::Profiler prof;
printf("mode=%d\n", mode);
prof.init(mode);
/*
func name must have three characters
*/
prof.set("f", (const void*)f, c.getSize());
prof.set("g", (const void*)g, c2.getSize());

14
xbyak/xbyak_util.h
View File

@ -1,5 +1,6 @@
#ifndef XBYAK_XBYAK_UTIL_H_
#define XBYAK_XBYAK_UTIL_H_
#include <string.h>
/**
utility class and functions for Xbyak
@ -759,7 +760,7 @@ public:
};
Profiler()
: mode_(None)
, suffix_(0)
, suffix_("")
, startAddr_(0)
#ifdef XBYAK_USE_PERF
, fp_(0)
@ -833,7 +834,16 @@ public:
#ifdef XBYAK_USE_PERF
if (mode_ == Perf) {
if (fp_ == 0) return;
fprintf(fp_, "%llx %zx %s%s\n", (long long)startAddr, funcSize, funcName, suffix_);
fprintf(fp_, "%llx %zx %s%s", (long long)startAddr, funcSize, funcName, suffix_);
/*
perf does not recognize the function name which is less than 3,
so append '_' at the end of the name if necessary
*/
size_t n = strlen(funcName) + strlen(suffix_);
for (size_t i = n; i < 3; i++) {
fprintf(fp_, "_");
}
fprintf(fp_, "\n");
fflush(fp_);
}
#endif