memcheck/tests/recursive-merge.c

   1 #include <stdlib.h>
   2 #include <stdio.h>
   3 #include <valgrind.h>
   4
   5 void (*fnptr[256])(char*, char*);
   6
   7 #define BODY(f)                                 \
   8 {                                               \
   9    fprintf(stderr, f);                          \
  10    calls++;                                     \
  11    (*fnptr[(int)*calls])(calls,seq);            \
  12 }
  13
  14 void stacktrace(char*last, char* callsequence)
  15 {
  16    fprintf(stderr, "\n");
  17    VALGRIND_PRINTF_BACKTRACE ("%s", callsequence);
  18 }
  19 __attribute__((noinline)) void f_a(char *calls, char*seq);
  20 __attribute__((noinline)) void f_b(char *calls, char*seq);
  21 __attribute__((noinline)) void f_c(char *calls, char*seq);
  22 __attribute__((noinline)) void f_d(char *calls, char*seq);
  23
  24 __attribute__((noinline)) void f_a(char *calls, char*seq)
  25 BODY("a")
  26
  27 __attribute__((noinline)) void f_b(char *calls, char*seq)
  28 BODY("b")
  29
  30 __attribute__((noinline)) void f_c(char *calls, char*seq)
  31 BODY("c");
  32
  33 __attribute__((noinline)) void f_d(char *calls, char*seq)
  34 BODY("d");
  35
  36 void doit (int argc, char**argv)
  37 {
  38    int i;
  39    for (i = 1; i < argc; i++) {
  40       char* calls = argv[i];
  41       char* seq = argv[i];
  42       calls--;
  43       BODY("test ")
  44    }
  45 }
  46
  47 int main(int argc, char**argv)
  48 {
  49
  50    fnptr[0] = stacktrace;
  51    fnptr['a'] = f_a;
  52    fnptr['b'] = f_b;
  53    fnptr['c'] = f_c;
  54    fnptr['d'] = f_d;
  55
  56    doit(argc, argv); // with default value of our argument.
  57
  58    (void) VALGRIND_MONITOR_COMMAND("v.set merge-recursive-frames 3");
  59    doit(argc, argv);
  60
  61    (void) VALGRIND_MONITOR_COMMAND("v.set merge-recursive-frames 2");
  62    doit(argc, argv);
  63
  64    (void) VALGRIND_MONITOR_COMMAND("v.set merge-recursive-frames 1");
  65    doit(argc, argv);
  66
  67    (void) VALGRIND_MONITOR_COMMAND("v.set merge-recursive-frames 0");
  68    doit(argc, argv);
  69
  70    return 0;
  71 }