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annotate third_party/wrk/src/ae_select.c @ 215:c3df85159b31

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removed a python library that isn't used for much.
author June Park <parkjune1995@gmail.com>
date Sat, 28 Feb 2026 20:34:18 -0800
parents 94705b5986b3
children
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rev   line source
178
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1 /* Select()-based ae.c module.
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2 *
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3 * Copyright (c) 2009-2012, Salvatore Sanfilippo <antirez at gmail dot com>
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4 * All rights reserved.
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5 *
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6 * Redistribution and use in source and binary forms, with or without
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7 * modification, are permitted provided that the following conditions are met:
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8 *
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9 * * Redistributions of source code must retain the above copyright notice,
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10 * this list of conditions and the following disclaimer.
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11 * * Redistributions in binary form must reproduce the above copyright
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12 * notice, this list of conditions and the following disclaimer in the
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13 * documentation and/or other materials provided with the distribution.
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14 * * Neither the name of Redis nor the names of its contributors may be used
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15 * to endorse or promote products derived from this software without
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16 * specific prior written permission.
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17 *
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18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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28 * POSSIBILITY OF SUCH DAMAGE.
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29 */
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30
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31
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32 #include <sys/select.h>
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33 #include <string.h>
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34
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35 typedef struct aeApiState {
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36 fd_set rfds, wfds;
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37 /* We need to have a copy of the fd sets as it's not safe to reuse
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38 * FD sets after select(). */
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39 fd_set _rfds, _wfds;
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40 } aeApiState;
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41
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42 static int aeApiCreate(aeEventLoop *eventLoop) {
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43 aeApiState *state = zmalloc(sizeof(aeApiState));
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44
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45 if (!state) return -1;
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46 FD_ZERO(&state->rfds);
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47 FD_ZERO(&state->wfds);
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48 eventLoop->apidata = state;
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49 return 0;
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50 }
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51
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52 static int aeApiResize(aeEventLoop *eventLoop, int setsize) {
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53 /* Just ensure we have enough room in the fd_set type. */
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54 if (setsize >= FD_SETSIZE) return -1;
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55 return 0;
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56 }
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57
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58 static void aeApiFree(aeEventLoop *eventLoop) {
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59 zfree(eventLoop->apidata);
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60 }
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61
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62 static int aeApiAddEvent(aeEventLoop *eventLoop, int fd, int mask) {
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63 aeApiState *state = eventLoop->apidata;
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64
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65 if (mask & AE_READABLE) FD_SET(fd,&state->rfds);
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66 if (mask & AE_WRITABLE) FD_SET(fd,&state->wfds);
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67 return 0;
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68 }
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69
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70 static void aeApiDelEvent(aeEventLoop *eventLoop, int fd, int mask) {
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71 aeApiState *state = eventLoop->apidata;
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72
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73 if (mask & AE_READABLE) FD_CLR(fd,&state->rfds);
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74 if (mask & AE_WRITABLE) FD_CLR(fd,&state->wfds);
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75 }
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76
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77 static int aeApiPoll(aeEventLoop *eventLoop, struct timeval *tvp) {
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78 aeApiState *state = eventLoop->apidata;
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79 int retval, j, numevents = 0;
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80
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81 memcpy(&state->_rfds,&state->rfds,sizeof(fd_set));
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82 memcpy(&state->_wfds,&state->wfds,sizeof(fd_set));
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83
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84 retval = select(eventLoop->maxfd+1,
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85 &state->_rfds,&state->_wfds,NULL,tvp);
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86 if (retval > 0) {
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87 for (j = 0; j <= eventLoop->maxfd; j++) {
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88 int mask = 0;
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89 aeFileEvent *fe = &eventLoop->events[j];
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90
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91 if (fe->mask == AE_NONE) continue;
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92 if (fe->mask & AE_READABLE && FD_ISSET(j,&state->_rfds))
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93 mask |= AE_READABLE;
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94 if (fe->mask & AE_WRITABLE && FD_ISSET(j,&state->_wfds))
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95 mask |= AE_WRITABLE;
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96 eventLoop->fired[numevents].fd = j;
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97 eventLoop->fired[numevents].mask = mask;
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98 numevents++;
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99 }
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100 }
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101 return numevents;
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102 }
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103
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104 static char *aeApiName(void) {
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105 return "select";
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106 }