tests/pthread_attr_setstacksize.c

   1 #include <stdlib.h>
   2 #include <string.h>
   3 #include <stdio.h>
   4 #include <limits.h>
   5 #include <pthread.h>
   6
   7 #include "darwintest_defaults.h"
   8
   9 #define STACK_ALLOWANCE (1024ULL * 6)
  10
  11 static void *
  12 pthread_attr_setstacksize_func(void *arg)
  13 {
  14     if ((size_t)arg < 1024ULL * 32) {
  15         /*
  16          * We can't use darwintest because it requires a bigger stack than
  17          * this, so cheat and use the return value for the test.
  18          */
  19 #ifndef __arm64__
  20         if ((size_t)arg != pthread_get_stacksize_np(pthread_self())) {
  21             return NULL;
  22         }
  23 #endif
  24         return (void*)pthread_attr_setstacksize_func;
  25     }
  26
  27 #if defined(__arm64__)
  28     // Because of <rdar://problem/19941744>, the kext adds additional size to the stack on arm64.
  29     T_EXPECTFAIL;
  30 #endif
  31     T_EXPECT_EQ((size_t)arg, pthread_get_stacksize_np(pthread_self()), "[stacksize=%zu] pthread_self stack size matches", (size_t)arg);
  32
  33     size_t stacksize = (size_t)arg - STACK_ALLOWANCE;
  34     char *buf = alloca(stacksize);
  35
  36     memset_s(buf, sizeof(buf), 0, sizeof(buf) - 1);
  37
  38     return (void*)pthread_attr_setstacksize_func;
  39 }
  40
  41 T_DECL(pthread_attr_setstacksize, "pthread_attr_setstacksize")
  42 {
  43     T_LOG("vm_page_size: %lld vm_kernel_page_size: %lld round_page(MIN): %lld", vm_page_size, vm_kernel_page_size, round_page(PTHREAD_STACK_MIN));
  44     size_t stacksizes[] = {PTHREAD_STACK_MIN, 1024ULL * 16, 1024ULL * 32, 1024ULL * 1024};
  45     for (int i = 0; (size_t)i < sizeof(stacksizes)/sizeof(stacksizes[0]); i++){
  46         pthread_t t = NULL;
  47         pthread_attr_t  attr;
  48         size_t stacksize = stacksizes[i];
  49
  50         T_ASSERT_POSIX_ZERO(pthread_attr_init(&attr), "[stacksize=%zu] pthread_attr_init", stacksize);
  51         T_ASSERT_POSIX_ZERO(pthread_attr_setstacksize(&attr, stacksize), "[stacksize=%zu] pthread_attr_stacksize", stacksize);
  52
  53         T_ASSERT_POSIX_ZERO(pthread_create(&t, &attr, pthread_attr_setstacksize_func, (void*)stacksize), "[stacksize=%zu] pthread_create", stacksize);
  54         T_ASSERT_NOTNULL(t, "[stacksize=%zu] pthread pointer not null", stacksize);
  55
  56         T_EXPECT_POSIX_ZERO(pthread_attr_destroy(&attr), "[stacksize=%zu] pthread_attr_destroy", stacksize);
  57
  58 #if defined(__arm64__)
  59         // Because of <rdar://problem/19941744>, the kext adds additional size to the stack on arm64.
  60         T_EXPECTFAIL;
  61 #endif
  62         T_EXPECT_EQ(stacksize, pthread_get_stacksize_np(t), "[stacksize=%zu] pthread stack size matches", stacksize);
  63
  64         void *out = NULL;
  65         T_ASSERT_POSIX_ZERO(pthread_join(t, &out), "[stacksize=%zu] pthread_join", stacksize);
  66         T_EXPECT_EQ_PTR(out, (void*)pthread_attr_setstacksize_func, "[stacksize=%zu] pthread_join returns correct value", stacksize);
  67     }
  68 }