124 lines
2.9 KiB
C
124 lines
2.9 KiB
C
/**
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* FreeRDP: A Remote Desktop Protocol Implementation
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* Signal handling
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*
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* Copyright 2011 Shea Levy <shea@shealevy.com>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <freerdp/config.h>
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#include <string.h>
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#include <winpr/crt.h>
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#include <winpr/debug.h>
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#include <freerdp/utils/signal.h>
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#include <freerdp/log.h>
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#include "platform_signal.h"
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#define TAG FREERDP_TAG("utils.signal")
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#if defined(_WIN32)
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const char* strsignal(int signum);
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#endif
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BOOL fsig_handlers_registered = FALSE;
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typedef struct
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{
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void* context;
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freerdp_signal_handler_t handler;
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} cleanup_handler_t;
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static size_t cleanup_handler_count = 0;
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static cleanup_handler_t cleanup_handlers[20] = WINPR_C_ARRAY_INIT;
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void fsig_term_handler(int signum)
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{
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static BOOL recursive = FALSE;
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if (!recursive)
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{
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recursive = TRUE;
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// NOLINTNEXTLINE(concurrency-mt-unsafe)
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WLog_ERR(TAG, "Caught signal '%s' [%d]", strsignal(signum), signum);
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}
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fsig_lock();
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for (size_t x = 0; x < cleanup_handler_count; x++)
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{
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const cleanup_handler_t empty = WINPR_C_ARRAY_INIT;
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cleanup_handler_t* cur = &cleanup_handlers[x];
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if (cur->handler)
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{
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// NOLINTNEXTLINE(concurrency-mt-unsafe)
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cur->handler(signum, strsignal(signum), cur->context);
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}
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*cur = empty;
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}
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cleanup_handler_count = 0;
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fsig_unlock();
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}
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BOOL freerdp_add_signal_cleanup_handler(void* context, freerdp_signal_handler_t handler)
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{
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BOOL rc = FALSE;
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fsig_lock();
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if (fsig_handlers_registered)
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{
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if (cleanup_handler_count < ARRAYSIZE(cleanup_handlers))
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{
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cleanup_handler_t* cur = &cleanup_handlers[cleanup_handler_count++];
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cur->context = context;
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cur->handler = handler;
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}
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else
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WLog_WARN(TAG, "Failed to register cleanup handler, only %" PRIuz " handlers supported",
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ARRAYSIZE(cleanup_handlers));
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}
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rc = TRUE;
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fsig_unlock();
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return rc;
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}
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BOOL freerdp_del_signal_cleanup_handler(void* context, freerdp_signal_handler_t handler)
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{
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BOOL rc = FALSE;
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fsig_lock();
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if (fsig_handlers_registered)
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{
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for (size_t x = 0; x < cleanup_handler_count; x++)
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{
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cleanup_handler_t* cur = &cleanup_handlers[x];
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if ((cur->context == context) && (cur->handler == handler))
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{
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const cleanup_handler_t empty = WINPR_C_ARRAY_INIT;
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for (size_t y = x + 1; y < cleanup_handler_count - 1; y++)
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{
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*cur++ = cleanup_handlers[y];
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}
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*cur = empty;
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cleanup_handler_count--;
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break;
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}
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}
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}
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rc = TRUE;
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fsig_unlock();
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return rc;
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}
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