mirror of https://github.com/FreeRDP/FreeRDP
204 lines
3.4 KiB
C
204 lines
3.4 KiB
C
/**
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* FreeRDP: A Remote Desktop Protocol client.
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* Virtual Channel Manager
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*
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* Copyright 2009-2011 Jay Sorg
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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 "config.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <freerdp/utils/memory.h>
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#include <freerdp/utils/wait_obj.h>
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#ifndef _WIN32
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#include <sys/time.h>
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#else
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#include <winsock2.h>
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#endif
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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struct wait_obj
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{
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#ifdef _WIN32
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HANDLE event;
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#else
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int pipe_fd[2];
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#endif
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};
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struct wait_obj*
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wait_obj_new(void)
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{
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struct wait_obj* obj;
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obj = xnew(struct wait_obj);
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#ifdef _WIN32
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obj->event = CreateEvent(NULL, TRUE, FALSE, NULL);
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#else
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obj->pipe_fd[0] = -1;
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obj->pipe_fd[1] = -1;
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if (pipe(obj->pipe_fd) < 0)
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{
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printf("wait_obj_new: pipe failed\n");
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xfree(obj);
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return NULL;
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}
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#endif
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return obj;
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}
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void
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wait_obj_free(struct wait_obj* obj)
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{
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if (obj)
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{
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#ifdef _WIN32
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if (obj->event)
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{
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CloseHandle(obj->event);
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obj->event = NULL;
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}
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#else
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if (obj->pipe_fd[0] != -1)
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{
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close(obj->pipe_fd[0]);
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obj->pipe_fd[0] = -1;
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}
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if (obj->pipe_fd[1] != -1)
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{
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close(obj->pipe_fd[1]);
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obj->pipe_fd[1] = -1;
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}
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#endif
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xfree(obj);
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}
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}
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int
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wait_obj_is_set(struct wait_obj* obj)
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{
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#ifdef _WIN32
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return (WaitForSingleObject(obj->event, 0) == WAIT_OBJECT_0);
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#else
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fd_set rfds;
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int num_set;
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struct timeval time;
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FD_ZERO(&rfds);
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FD_SET(obj->pipe_fd[0], &rfds);
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memset(&time, 0, sizeof(time));
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num_set = select(obj->pipe_fd[0] + 1, &rfds, 0, 0, &time);
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return (num_set == 1);
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#endif
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}
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void
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wait_obj_set(struct wait_obj* obj)
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{
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#ifdef _WIN32
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SetEvent(obj->event);
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#else
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int len;
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if (wait_obj_is_set(obj))
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return;
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len = write(obj->pipe_fd[1], "sig", 4);
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if (len != 4)
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printf("wait_obj_set: error\n");
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#endif
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}
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void
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wait_obj_clear(struct wait_obj* obj)
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{
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#ifdef _WIN32
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ResetEvent(obj->event);
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#else
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int len;
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while (wait_obj_is_set(obj))
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{
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len = read(obj->pipe_fd[0], &len, 4);
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if (len != 4)
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printf("wait_obj_clear: error\n");
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}
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#endif
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}
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int
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wait_obj_select(struct wait_obj** listobj, int numobj, int timeout)
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{
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#ifndef _WIN32
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int max;
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int sock;
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int index;
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#endif
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fd_set fds;
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int status;
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struct timeval time;
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struct timeval* ptime;
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ptime = 0;
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if (timeout >= 0)
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{
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time.tv_sec = timeout / 1000;
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time.tv_usec = (timeout * 1000) % 1000000;
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ptime = &time;
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}
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#ifndef _WIN32
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max = 0;
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FD_ZERO(&fds);
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if (listobj)
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{
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for (index = 0; index < numobj; index++)
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{
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sock = listobj[index]->pipe_fd[0];
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FD_SET(sock, &fds);
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if (sock > max)
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max = sock;
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}
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}
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status = select(max + 1, &fds, 0, 0, ptime);
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#else
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status = select(0, &fds, 0, 0, ptime);
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#endif
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return status;
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}
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void wait_obj_get_fds(struct wait_obj* obj, void** fds, int* count)
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{
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#ifdef _WIN32
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fds[*count] = (void*) obj->event;
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#else
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if (obj->pipe_fd[0] == -1)
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return;
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fds[*count] = (void*)(long) obj->pipe_fd[0];
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#endif
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(*count)++;
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}
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