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author | 2016-02-21 11:48:45 +0100 | |
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committer | 2016-02-21 11:48:45 +0100 | |
commit | cc24a339d8c0517259084b5c178d784626ba965c (patch) | |
tree | 9868e9687b5802ae0a3733712a3bbeb3bc75c953 /3rdparty/libuv/test/test-queue-foreach-delete.c | |
parent | b5daabda5495dea5c50e17961ecfed2ea8619d76 (diff) |
Merge remote-tracking branch 'refs/remotes/mamedev/master'
Second attempt
Diffstat (limited to '3rdparty/libuv/test/test-queue-foreach-delete.c')
-rw-r--r-- | 3rdparty/libuv/test/test-queue-foreach-delete.c | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/3rdparty/libuv/test/test-queue-foreach-delete.c b/3rdparty/libuv/test/test-queue-foreach-delete.c new file mode 100644 index 00000000000..45da225381f --- /dev/null +++ b/3rdparty/libuv/test/test-queue-foreach-delete.c @@ -0,0 +1,200 @@ +/* Copyright The libuv project and contributors. All rights reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to + * deal in the Software without restriction, including without limitation the + * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + */ + +#include "uv.h" +#include "task.h" + +#include <string.h> + + +/* + * The idea behind the test is as follows. + * Certain handle types are stored in a queue internally. + * Extra care should be taken for removal of a handle from the queue while iterating over the queue. + * (i.e., QUEUE_REMOVE() called within QUEUE_FOREACH()) + * This usually happens when someone closes or stops a handle from within its callback. + * So we need to check that we haven't screwed the queue on close/stop. + * To do so we do the following (for each handle type): + * 1. Create and start 3 handles (#0, #1, and #2). + * + * The queue after the start() calls: + * ..=> [queue head] <=> [handle] <=> [handle #1] <=> [handle] <=.. + * + * 2. Trigger handles to fire (for uv_idle_t, uv_prepare_t, and uv_check_t there is nothing to do). + * + * 3. In the callback for the first-executed handle (#0 or #2 depending on handle type) + * stop the handle and the next one (#1). + * (for uv_idle_t, uv_prepare_t, and uv_check_t callbacks are executed in the reverse order as they are start()'ed, + * so callback for handle #2 will be called first) + * + * The queue after the stop() calls: + * correct foreach "next" | + * \/ + * ..=> [queue head] <==============================> [handle] <=.. + * [ ] <- [handle] <=> [handle #1] -> [ ] + * /\ + * wrong foreach "next" | + * + * 4. The callback for handle #1 shouldn't be called because the handle #1 is stopped in the previous step. + * However, if QUEUE_REMOVE() is not handled properly within QUEUE_FOREACH(), the callback _will_ be called. + */ + +static const unsigned first_handle_number_idle = 2; +static const unsigned first_handle_number_prepare = 2; +static const unsigned first_handle_number_check = 2; +#ifdef __linux__ +static const unsigned first_handle_number_fs_event = 0; +#endif + + +#define DEFINE_GLOBALS_AND_CBS(name) \ + static uv_##name##_t (name)[3]; \ + static unsigned name##_cb_calls[3]; \ + \ + static void name##2_cb(uv_##name##_t* handle) { \ + ASSERT(handle == &(name)[2]); \ + if (first_handle_number_##name == 2) { \ + uv_close((uv_handle_t*)&(name)[2], NULL); \ + uv_close((uv_handle_t*)&(name)[1], NULL); \ + } \ + name##_cb_calls[2]++; \ + } \ + \ + static void name##1_cb(uv_##name##_t* handle) { \ + ASSERT(handle == &(name)[1]); \ + ASSERT(0 && "Shouldn't be called" && (&name[0])); \ + } \ + \ + static void name##0_cb(uv_##name##_t* handle) { \ + ASSERT(handle == &(name)[0]); \ + if (first_handle_number_##name == 0) { \ + uv_close((uv_handle_t*)&(name)[0], NULL); \ + uv_close((uv_handle_t*)&(name)[1], NULL); \ + } \ + name##_cb_calls[0]++; \ + } \ + \ + static const uv_##name##_cb name##_cbs[] = { \ + (uv_##name##_cb)name##0_cb, \ + (uv_##name##_cb)name##1_cb, \ + (uv_##name##_cb)name##2_cb, \ + }; + +#define INIT_AND_START(name, loop) \ + do { \ + size_t i; \ + for (i = 0; i < ARRAY_SIZE(name); i++) { \ + int r; \ + r = uv_##name##_init((loop), &(name)[i]); \ + ASSERT(r == 0); \ + \ + r = uv_##name##_start(&(name)[i], name##_cbs[i]); \ + ASSERT(r == 0); \ + } \ + } while (0) + +#define END_ASSERTS(name) \ + do { \ + ASSERT(name##_cb_calls[0] == 1); \ + ASSERT(name##_cb_calls[1] == 0); \ + ASSERT(name##_cb_calls[2] == 1); \ + } while (0) + +DEFINE_GLOBALS_AND_CBS(idle) +DEFINE_GLOBALS_AND_CBS(prepare) +DEFINE_GLOBALS_AND_CBS(check) + +#ifdef __linux__ +DEFINE_GLOBALS_AND_CBS(fs_event) + +static const char watched_dir[] = "."; +static uv_timer_t timer; +static unsigned helper_timer_cb_calls; + + +static void init_and_start_fs_events(uv_loop_t* loop) { + size_t i; + for (i = 0; i < ARRAY_SIZE(fs_event); i++) { + int r; + r = uv_fs_event_init(loop, &fs_event[i]); + ASSERT(r == 0); + + r = uv_fs_event_start(&fs_event[i], + (uv_fs_event_cb)fs_event_cbs[i], + watched_dir, + 0); + ASSERT(r == 0); + } +} + +static void helper_timer_cb(uv_timer_t* thandle) { + int r; + uv_fs_t fs_req; + + /* fire all fs_events */ + r = uv_fs_utime(thandle->loop, &fs_req, watched_dir, 0, 0, NULL); + ASSERT(r == 0); + ASSERT(fs_req.result == 0); + ASSERT(fs_req.fs_type == UV_FS_UTIME); + ASSERT(strcmp(fs_req.path, watched_dir) == 0); + uv_fs_req_cleanup(&fs_req); + + helper_timer_cb_calls++; +} +#endif + + +TEST_IMPL(queue_foreach_delete) { + uv_loop_t* loop; + int r; + + loop = uv_default_loop(); + + INIT_AND_START(idle, loop); + INIT_AND_START(prepare, loop); + INIT_AND_START(check, loop); + +#ifdef __linux__ + init_and_start_fs_events(loop); + + /* helper timer to trigger async and fs_event callbacks */ + r = uv_timer_init(loop, &timer); + ASSERT(r == 0); + + r = uv_timer_start(&timer, helper_timer_cb, 0, 0); + ASSERT(r == 0); +#endif + + r = uv_run(loop, UV_RUN_NOWAIT); + ASSERT(r == 1); + + END_ASSERTS(idle); + END_ASSERTS(prepare); + END_ASSERTS(check); + +#ifdef __linux__ + ASSERT(helper_timer_cb_calls == 1); +#endif + + MAKE_VALGRIND_HAPPY(); + + return 0; +} |