gcc/testsuite/gcc.dg/plugin/gil-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-fanalyzer" } */
   3 /* { dg-require-effective-target analyzer } */
   4
   5 #include "gil.h"
   6
   7 void test_1 (void)
   8 {
   9   Py_BEGIN_ALLOW_THREADS
  10   Py_END_ALLOW_THREADS
  11 }
  12
  13 void test_2 (PyObject *obj)
  14 {
  15   Py_BEGIN_ALLOW_THREADS /* { dg-message "releasing the GIL here" } */
  16
  17   Py_INCREF (obj); /* { dg-warning "use of PyObject '\\*obj' without the GIL" } */
  18   Py_DECREF (obj);
  19
  20   Py_END_ALLOW_THREADS
  21 }
  22
  23 void test_3 (PyObject *obj)
  24 {
  25   Py_BEGIN_ALLOW_THREADS /* { dg-message "releasing the GIL here" } */
  26
  27   Py_BEGIN_ALLOW_THREADS /* { dg-warning "nested usage of 'Py_BEGIN_ALLOW_THREADS'" } */
  28   Py_END_ALLOW_THREADS
  29
  30   Py_END_ALLOW_THREADS
  31 }
  32
  33 void test_4 (PyObject *obj)
  34 {
  35   /* These aren't nested, so should be OK.  */
  36   Py_BEGIN_ALLOW_THREADS
  37   Py_END_ALLOW_THREADS
  38
  39   Py_BEGIN_ALLOW_THREADS
  40   Py_END_ALLOW_THREADS
  41 }
  42
  43 /* Interprocedural example of erroneously nested usage.  */
  44
  45 static void  __attribute__((noinline))
  46 called_by_test_5 (void)
  47 {
  48   Py_BEGIN_ALLOW_THREADS /* { dg-warning "nested usage of 'Py_BEGIN_ALLOW_THREADS'" } */
  49   Py_END_ALLOW_THREADS
  50 }
  51
  52 void test_5 (PyObject *obj)
  53 {
  54   Py_BEGIN_ALLOW_THREADS /* { dg-message "releasing the GIL here" } */
  55   called_by_test_5 ();
  56   Py_END_ALLOW_THREADS
  57 }
  58
  59 /* Interprocedural example of bogusly using a PyObject outside of GIL.  */
  60
  61 static void  __attribute__((noinline))
  62 called_by_test_6 (PyObject *obj)
  63 {
  64   Py_INCREF (obj); /* { dg-warning "use of PyObject '\\*obj' without the GIL" } */
  65   Py_DECREF (obj);
  66 }
  67
  68 void test_6 (PyObject *obj)
  69 {
  70   Py_BEGIN_ALLOW_THREADS /* { dg-message "releasing the GIL here" } */
  71   called_by_test_6 (obj);
  72   Py_END_ALLOW_THREADS
  73 }
  74
  75 extern void called_by_test_7 (PyObject *obj);
  76
  77 void test_7 (PyObject *obj)
  78 {
  79   Py_BEGIN_ALLOW_THREADS /* { dg-message "releasing the GIL here" } */
  80   called_by_test_7 (obj); /* { dg-warning "use of PyObject as argument 1 of 'called_by_test_7' without the GIL" } */
  81   Py_END_ALLOW_THREADS
  82 }
  83
  84 typedef void (*callback_t) (PyObject *);
  85
  86 void test_8 (PyObject *obj, callback_t cb)
  87 {
  88   Py_BEGIN_ALLOW_THREADS /* { dg-message "releasing the GIL here" } */
  89   cb (obj); /* { dg-warning "use of PyObject as argument 1 of call without the GIL" } */
  90   Py_END_ALLOW_THREADS
  91 }