/src/curl/lib/curl_threads.c

Source
/***************************************************************************
 *                                  _   _ ____  _
 *  Project                     ___| | | |  _ \| |
 *                             / __| | | | |_) | |
 *                            | (__| |_| |  _ <| |___
 *                             \___|\___/|_| \_\_____|
 *
 * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
 *
 * This software is licensed as described in the file COPYING, which
 * you should have received as part of this distribution. The terms
 * are also available at https://curl.se/docs/copyright.html.
 *
 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
 * copies of the Software, and permit persons to whom the Software is
 * furnished to do so, under the terms of the COPYING file.
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
 * KIND, either express or implied.
 *
 * SPDX-License-Identifier: curl
 *
 ***************************************************************************/

#include "curl_setup.h"

#include <curl/curl.h>

#if defined(USE_THREADS_POSIX) && defined(HAVE_PTHREAD_H)
#include <pthread.h>
#endif

#include "curl_threads.h"

#ifdef USE_THREADS_POSIX

struct Curl_actual_call {
  unsigned int (*func)(void *);
  void *arg;
};

static void *curl_thread_create_thunk(void *arg)
{
  struct Curl_actual_call *ac = arg;
  unsigned int (*func)(void *) = ac->func;
  void *real_arg = ac->arg;

  curlx_free(ac);

  (*func)(real_arg);

  return 0;
}

curl_thread_t Curl_thread_create(CURL_THREAD_RETURN_T
                                 (CURL_STDCALL *func) (void *), void *arg)
{
  curl_thread_t t = curlx_malloc(sizeof(pthread_t));
  struct Curl_actual_call *ac = curlx_malloc(sizeof(struct Curl_actual_call));
  int rc;
  if(!(ac && t))
    goto err;

  ac->func = func;
  ac->arg = arg;

  rc = pthread_create(t, NULL, curl_thread_create_thunk, ac);
  if(rc) {
    errno = rc;
    goto err;
  }

  return t;

err:
  curlx_free(t);
  curlx_free(ac);
  return curl_thread_t_null;
}

void Curl_thread_destroy(curl_thread_t *hnd)
{
  if(*hnd != curl_thread_t_null) {
    pthread_detach(**hnd);
    curlx_free(*hnd);
    *hnd = curl_thread_t_null;
  }
}

int Curl_thread_join(curl_thread_t *hnd)
{
  int ret = (pthread_join(**hnd, NULL) == 0);

  curlx_free(*hnd);
  *hnd = curl_thread_t_null;

  return ret;
}

#elif defined(USE_THREADS_WIN32)

curl_thread_t Curl_thread_create(CURL_THREAD_RETURN_T
                                 (CURL_STDCALL *func) (void *), void *arg)
{
  curl_thread_t t = CreateThread(NULL, 0, func, arg, 0, NULL);
  if(!t) {
    DWORD gle = GetLastError();
    /* !checksrc! disable ERRNOVAR 1 */
    errno = (gle == ERROR_ACCESS_DENIED ||
             gle == ERROR_NOT_ENOUGH_MEMORY) ?
             EACCES : EINVAL;
    return curl_thread_t_null;
  }
  return t;
}

void Curl_thread_destroy(curl_thread_t *hnd)
{
  if(*hnd != curl_thread_t_null) {
    CloseHandle(*hnd);
    *hnd = curl_thread_t_null;
  }
}

int Curl_thread_join(curl_thread_t *hnd)
{
  int ret = (WaitForSingleObjectEx(*hnd, INFINITE, FALSE) == WAIT_OBJECT_0);

  Curl_thread_destroy(hnd);

  return ret;
}

#endif /* USE_THREADS_* */

Line	Count	Source
1		/***************************************************************************
2		* _ _ ____ _
3		* Project ___\| \| \| \| _ \\| \|
4		* / __\| \| \| \| \|_) \| \|
5		* \| (__\| \|_\| \| _ <\| \|___
6		* \___\|\___/\|_\| \_\_____\|
7		*
8		* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
9		*
10		* This software is licensed as described in the file COPYING, which
11		* you should have received as part of this distribution. The terms
12		* are also available at https://curl.se/docs/copyright.html.
13		*
14		* You may opt to use, copy, modify, merge, publish, distribute and/or sell
15		* copies of the Software, and permit persons to whom the Software is
16		* furnished to do so, under the terms of the COPYING file.
17		*
18		* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19		* KIND, either express or implied.
20		*
21		* SPDX-License-Identifier: curl
22		*
23		***************************************************************************/
24
25		#include "curl_setup.h"
26
27		#include <curl/curl.h>
28
29		#if defined(USE_THREADS_POSIX) && defined(HAVE_PTHREAD_H)
30		#include <pthread.h>
31		#endif
32
33		#include "curl_threads.h"
34
35		#ifdef USE_THREADS_POSIX
36
37		struct Curl_actual_call {
38		unsigned int (func)(void );
39		void *arg;
40		};
41
42		static void curl_thread_create_thunk(void arg)
43	0	{
44	0	struct Curl_actual_call *ac = arg;
45	0	unsigned int (func)(void ) = ac->func;
46	0	void *real_arg = ac->arg;
47
48	0	curlx_free(ac);
49
50	0	(*func)(real_arg);
51
52	0	return 0;
53	0	}
54
55		curl_thread_t Curl_thread_create(CURL_THREAD_RETURN_T
56		(CURL_STDCALL func) (void ), void *arg)
57	0	{
58	0	curl_thread_t t = curlx_malloc(sizeof(pthread_t));
59	0	struct Curl_actual_call *ac = curlx_malloc(sizeof(struct Curl_actual_call));
60	0	int rc;
61	0	if(!(ac && t))
62	0	goto err;
63
64	0	ac->func = func;
65	0	ac->arg = arg;
66
67	0	rc = pthread_create(t, NULL, curl_thread_create_thunk, ac);
68	0	if(rc) {
69	0	errno = rc;
70	0	goto err;
71	0	}
72
73	0	return t;
74
75	0	err:
76	0	curlx_free(t);
77	0	curlx_free(ac);
78	0	return curl_thread_t_null;
79	0	}
80
81		void Curl_thread_destroy(curl_thread_t *hnd)
82	0	{
83	0	if(*hnd != curl_thread_t_null) {
84	0	pthread_detach(**hnd);
85	0	curlx_free(*hnd);
86	0	*hnd = curl_thread_t_null;
87	0	}
88	0	}
89
90		int Curl_thread_join(curl_thread_t *hnd)
91	0	{
92	0	int ret = (pthread_join(**hnd, NULL) == 0);
93
94	0	curlx_free(*hnd);
95	0	*hnd = curl_thread_t_null;
96
97	0	return ret;
98	0	}
99
100		#elif defined(USE_THREADS_WIN32)
101
102		curl_thread_t Curl_thread_create(CURL_THREAD_RETURN_T
103		(CURL_STDCALL func) (void ), void *arg)
104		{
105		curl_thread_t t = CreateThread(NULL, 0, func, arg, 0, NULL);
106		if(!t) {
107		DWORD gle = GetLastError();
108		/* !checksrc! disable ERRNOVAR 1 */
109		errno = (gle == ERROR_ACCESS_DENIED \|\|
110		gle == ERROR_NOT_ENOUGH_MEMORY) ?
111		EACCES : EINVAL;
112		return curl_thread_t_null;
113		}
114		return t;
115		}
116
117		void Curl_thread_destroy(curl_thread_t *hnd)
118		{
119		if(*hnd != curl_thread_t_null) {
120		CloseHandle(*hnd);
121		*hnd = curl_thread_t_null;
122		}
123		}
124
125		int Curl_thread_join(curl_thread_t *hnd)
126		{
127		int ret = (WaitForSingleObjectEx(*hnd, INFINITE, FALSE) == WAIT_OBJECT_0);
128
129		Curl_thread_destroy(hnd);
130
131		return ret;
132		}
133
134		#endif /* USE_THREADS_* */

Coverage Report

Created: 2025-12-04 06:52