Esempio n. 1
0
/* Flush all traces. */
int lj_trace_flushall(lua_State *L)
{
  jit_State *J = L2J(L);
  ptrdiff_t i;
  if ((J2G(J)->hookmask & HOOK_GC))
    return 1;
  for (i = (ptrdiff_t)J->sizetrace-1; i > 0; i--) {
    GCtrace *T = traceref(J, i);
    if (T) {
      if (T->root == 0)
	trace_flushroot(J, T);
      lj_gdbjit_deltrace(J, T);
      T->traceno = 0;
      setgcrefnull(J->trace[i]);
    }
  }
  J->cur.traceno = 0;
  J->freetrace = 0;
  /* Clear penalty cache. */
  memset(J->penalty, 0, sizeof(J->penalty));
  /* Free the whole machine code and invalidate all exit stub groups. */
  lj_mcode_free(J);
  memset(J->exitstubgroup, 0, sizeof(J->exitstubgroup));
  lj_vmevent_send(L, TRACE,
    setstrV(L, L->top++, lj_str_newlit(L, "flush"));
  );
Esempio n. 2
0
/* Check trace argument. Must not throw for non-existent trace numbers. */
static GCtrace *jit_checktrace(lua_State *L)
{
    TraceNo tr = (TraceNo)lj_lib_checkint(L, 1);
    jit_State *J = L2J(L);
    if (tr > 0 && tr < J->sizetrace)
        return traceref(J, tr);
    return NULL;
}
Esempio n. 3
0
/* Check trace argument. Must not throw for non-existent trace numbers. */
static Trace *jit_checktrace(lua_State *L)
{
  TraceNo tr = (TraceNo)lj_lib_checkint(L, 1);
  jit_State *J = L2J(L);
  if (tr > 0 && tr < J->sizetrace)
    return J->trace[tr];
  return NULL;
}
Esempio n. 4
0
/* Start profiling. */
LUA_API void luaJIT_profile_start(lua_State *L, const char *mode,
				  luaJIT_profile_callback cb, void *data)
{
  ProfileState *ps = &profile_state;
  int interval = LJ_PROFILE_INTERVAL_DEFAULT;
  char *flavour;

  while (*mode) {
    int m = *mode++;
    switch (m) {
    case 'i':
      interval = 0;
      while (*mode >= '0' && *mode <= '9')
	interval = interval * 10 + (*mode++ - '0');
      if (interval <= 0) interval = 1;
      break;
#if LJ_HASJIT
    case 'l': case 'f':
      L2J(L)->prof_mode = m;
      lj_trace_flushall(L);
      break;
#endif
    case 'S':
      {
	int k;
	if (sscanf (mode, "[%m[^]]]%n", &flavour, &k) > 0)
	  mode += k;
      }

    default:  /* Ignore unknown mode chars. */
      break;
    }
  }
  if (ps->g) {
    luaJIT_profile_stop(L);
    if (ps->g) return;  /* Profiler in use by another VM. */
  }
  ps->g = G(L);
  ps->interval = interval;
  ps->cb = cb;
  ps->data = data;
  ps->samples = 0;
  ps->flavour = flavour;
  lj_buf_init(L, &ps->sb);
  profile_timer_start(ps);
}