compiler-rt/test/profile/ContinuousSyncMode/pid-substitution.c

   1 // REQUIRES: darwin
   2
   3 // RUN: rm -rf %t.dir && mkdir -p %t.dir
   4 // RUN: %clang_pgogen -o %t.exe %s
   5 //
   6 // Note: %%p is needed here, not %p, because of lit's path substitution.
   7 // RUN: env LLVM_PROFILE_FILE="%t.dir/%c-%%p" %run %t.exe
   8
   9 #include <stdlib.h>
  10 #include <string.h>
  11
  12 extern int __llvm_profile_is_continuous_mode_enabled(void);
  13 extern const char *__llvm_profile_get_filename(void);
  14 extern int getpid(void);
  15
  16 int main() {
  17   // Check that continuous mode is enabled.
  18   if (!__llvm_profile_is_continuous_mode_enabled())
  19     return 1;
  20
  21   // Check that the PID is actually in the filename.
  22   const char *Filename = __llvm_profile_get_filename();
  23
  24   int Len = strlen(Filename);
  25   --Len;
  26   while (Filename[Len] != '-')
  27     --Len;
  28
  29   const char *PidStr = Filename + Len + 1;
  30   int Pid = atoi(PidStr);
  31
  32   if (Pid != getpid())
  33     return 1;
  34
  35   return 0;
  36 }