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curl_version_info: add CURL_VERSION_THREADSAFE_INIT
This flag can be used to make sure that curl_global_init() is thread-safe. This can be useful for libraries that can't control what other dependencies are doing with Curl. Closes #8680
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,101 @@ | ||
| /*************************************************************************** | ||
| * _ _ ____ _ | ||
| * Project ___| | | | _ \| | | ||
| * / __| | | | |_) | | | ||
| * | (__| |_| | _ <| |___ | ||
| * \___|\___/|_| \_\_____| | ||
| * | ||
| * Copyright (C) 1998 - 2022, 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. | ||
| * | ||
| ***************************************************************************/ | ||
| #include "test.h" | ||
|
|
||
| #include "testutil.h" | ||
| #include "warnless.h" | ||
|
|
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| #ifdef HAVE_PTHREAD_H | ||
| #include <pthread.h> | ||
| #include <unistd.h> | ||
|
|
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| #define NUM_THREADS 1000 | ||
|
|
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| static void *run_thread(void *ptr) | ||
| { | ||
| CURLcode *result = ptr; | ||
|
|
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| *result = curl_global_init(CURL_GLOBAL_ALL); | ||
| if(*result == CURLE_OK) | ||
| curl_global_cleanup(); | ||
|
|
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| return NULL; | ||
| } | ||
|
|
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| int test(char *URL) | ||
| { | ||
| CURLcode results[NUM_THREADS]; | ||
| pthread_t tids[NUM_THREADS]; | ||
| unsigned tid_count = NUM_THREADS, i; | ||
| int test_failure = 0; | ||
| curl_version_info_data *ver; | ||
| (void) URL; | ||
|
|
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| ver = curl_version_info(CURLVERSION_NOW); | ||
| if((ver->features & CURL_VERSION_THREADSAFE_INIT) == 0) { | ||
| fprintf(stderr, "%s:%d Have pthread but the " | ||
| "CURL_VERSION_THREADSAFE_INIT feature flag is not set\n", | ||
| __FILE__, __LINE__); | ||
| return -1; | ||
| } | ||
|
|
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| for(i = 0; i < tid_count; i++) { | ||
| int res = pthread_create(&tids[i], NULL, run_thread, &results[i]); | ||
| if(res) { | ||
| fprintf(stderr, "%s:%d Couldn't create thread, errno %d\n", | ||
| __FILE__, __LINE__, res); | ||
| tid_count = i; | ||
| test_failure = -1; | ||
| goto cleanup; | ||
| } | ||
| } | ||
|
|
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| cleanup: | ||
| for(i = 0; i < tid_count; i++) { | ||
| pthread_join(tids[i], NULL); | ||
| if(results[i] != CURLE_OK) { | ||
| fprintf(stderr, "%s:%d thread[%u]: curl_global_init() failed," | ||
| "with code %d (%s)\n", __FILE__, __LINE__, | ||
| i, (int) results[i], curl_easy_strerror(results[i])); | ||
| test_failure = -1; | ||
| } | ||
| } | ||
|
|
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| return test_failure; | ||
| } | ||
|
|
||
| #else /* without pthread, this test doesn't work */ | ||
| int test(char *URL) | ||
| { | ||
| curl_version_info_data *ver; | ||
| (void)URL; | ||
|
|
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| ver = curl_version_info(CURLVERSION_NOW); | ||
| if((ver->features & CURL_VERSION_THREADSAFE_INIT) != 0) { | ||
| fprintf(stderr, "%s:%d No pthread but the " | ||
| "CURL_VERSION_THREADSAFE_INIT feature flag is set\n", | ||
| __FILE__, __LINE__); | ||
| return -1; | ||
| } | ||
| return 0; | ||
| } | ||
| #endif |