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#include <stdlib.h>
#include <stdio.h>
#include <valgrind.h>
void (*fnptr[256])(char*, char*);
#define BODY(f) \
{ \
fprintf(stderr, f); \
calls++; \
(*fnptr[(int)*calls])(calls,seq); \
}
void stacktrace(char*last, char* callsequence)
{
fprintf(stderr, "\n");
VALGRIND_PRINTF_BACKTRACE ("%s", callsequence);
}
__attribute__((noinline)) void f_a(char *calls, char*seq);
__attribute__((noinline)) void f_b(char *calls, char*seq);
__attribute__((noinline)) void f_c(char *calls, char*seq);
__attribute__((noinline)) void f_d(char *calls, char*seq);
__attribute__((noinline)) void f_a(char *calls, char*seq)
BODY("a")
__attribute__((noinline)) void f_b(char *calls, char*seq)
BODY("b")
__attribute__((noinline)) void f_c(char *calls, char*seq)
BODY("c");
__attribute__((noinline)) void f_d(char *calls, char*seq)
BODY("d");
void doit (int argc, char**argv)
{
int i;
for (i = 1; i < argc; i++) {
char* calls = argv[i];
char* seq = argv[i];
calls--;
BODY("test ")
}
}
int main(int argc, char**argv)
{
fnptr[0] = stacktrace;
fnptr['a'] = f_a;
fnptr['b'] = f_b;
fnptr['c'] = f_c;
fnptr['d'] = f_d;
doit(argc, argv); // with default value of our argument.
(void) VALGRIND_MONITOR_COMMAND("v.set merge-recursive-frames 3");
doit(argc, argv);
(void) VALGRIND_MONITOR_COMMAND("v.set merge-recursive-frames 2");
doit(argc, argv);
(void) VALGRIND_MONITOR_COMMAND("v.set merge-recursive-frames 1");
doit(argc, argv);
(void) VALGRIND_MONITOR_COMMAND("v.set merge-recursive-frames 0");
doit(argc, argv);
return 0;
}
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