[0aec496] | 1 | #include "worker.hfa" |
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| 2 | |
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| 3 | #include <errno.h> |
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| 4 | #include <stdio.h> |
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| 5 | #include <string.h> |
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[c82af9f] | 6 | #include <unistd.h> |
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[0aec496] | 7 | |
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[8c43d05] | 8 | #include <fstream.hfa> |
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[0aec496] | 9 | #include <iofwd.hfa> |
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[7f0ac12] | 10 | #include <mutex_stmt.hfa> |
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[0aec496] | 11 | |
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| 12 | #include "options.hfa" |
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| 13 | #include "protocol.hfa" |
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| 14 | #include "filecache.hfa" |
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| 15 | |
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| 16 | //============================================================================================= |
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[7f0ac12] | 17 | // Generic connection handling |
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[0aec496] | 18 | //============================================================================================= |
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[137974ae] | 19 | static void handle_connection( connection & this, volatile int & fd, char * buffer, size_t len, io_future_t * f, unsigned long long & last ) { |
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[7f0ac12] | 20 | REQUEST: |
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| 21 | for() { |
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| 22 | bool closed; |
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| 23 | HttpCode code; |
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| 24 | const char * file; |
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| 25 | size_t name_size; |
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| 26 | |
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| 27 | // Read the http request |
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[10ba012] | 28 | if( options.log ) mutex(sout) sout | "=== Reading request ==="; |
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[7f0ac12] | 29 | [code, closed, file, name_size] = http_read(fd, buffer, len, f); |
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| 30 | f = 0p; |
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| 31 | |
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| 32 | // if we are done, break out of the loop |
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| 33 | if( closed ) break REQUEST; |
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| 34 | |
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| 35 | // If this wasn't a request retrun 400 |
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| 36 | if( code != OK200 ) { |
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| 37 | sout | "=== Invalid Request :" | code_val(code) | "==="; |
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| 38 | answer_error(fd, code); |
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| 39 | continue REQUEST; |
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| 40 | } |
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[ef3c383] | 41 | |
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[7f0ac12] | 42 | if(0 == strncmp(file, "plaintext", min(name_size, sizeof("plaintext") ))) { |
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[10ba012] | 43 | if( options.log ) mutex(sout) sout | "=== Request for /plaintext ==="; |
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[7f0ac12] | 44 | |
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| 45 | int ret = answer_plaintext(fd); |
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| 46 | if( ret == -ECONNRESET ) break REQUEST; |
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| 47 | |
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[10ba012] | 48 | if( options.log ) mutex(sout) sout | "=== Answer sent ==="; |
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[7f0ac12] | 49 | continue REQUEST; |
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| 50 | } |
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| 51 | |
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| 52 | if(0 == strncmp(file, "ping", min(name_size, sizeof("ping") ))) { |
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[10ba012] | 53 | if( options.log ) mutex(sout) sout | "=== Request for /ping ==="; |
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[7f0ac12] | 54 | |
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| 55 | // Send the header |
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| 56 | int ret = answer_empty(fd); |
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| 57 | if( ret == -ECONNRESET ) break REQUEST; |
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| 58 | |
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[10ba012] | 59 | if( options.log ) mutex(sout) sout | "=== Answer sent ==="; |
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[7f0ac12] | 60 | continue REQUEST; |
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| 61 | } |
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| 62 | |
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| 63 | if( options.log ) { |
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| 64 | sout | "=== Request for file " | nonl; |
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| 65 | write(sout, file, name_size); |
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| 66 | sout | " ==="; |
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| 67 | } |
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| 68 | |
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| 69 | if( !options.file_cache.path ) { |
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| 70 | if( options.log ) { |
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| 71 | sout | "=== File Not Found (" | nonl; |
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| 72 | write(sout, file, name_size); |
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| 73 | sout | ") ==="; |
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| 74 | } |
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| 75 | answer_error(fd, E405); |
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| 76 | continue REQUEST; |
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| 77 | } |
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| 78 | |
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| 79 | // Get the fd from the file cache |
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| 80 | int ans_fd; |
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| 81 | size_t count; |
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| 82 | [ans_fd, count] = get_file( file, name_size ); |
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| 83 | |
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| 84 | // If we can't find the file, return 404 |
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| 85 | if( ans_fd < 0 ) { |
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| 86 | if( options.log ) { |
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| 87 | sout | "=== File Not Found (" | nonl; |
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| 88 | write(sout, file, name_size); |
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| 89 | sout | ") ==="; |
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| 90 | } |
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| 91 | answer_error(fd, E404); |
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| 92 | continue REQUEST; |
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| 93 | } |
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| 94 | |
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| 95 | // Send the desired file |
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| 96 | int ret = answer_sendfile( this.pipe, fd, ans_fd, count, this.stats.sendfile ); |
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| 97 | if( ret == -ECONNRESET ) break REQUEST; |
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| 98 | |
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[10ba012] | 99 | if( options.log ) mutex(sout) sout | "=== Answer sent ==="; |
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[ef3c383] | 100 | } |
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[137974ae] | 101 | |
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| 102 | if (stats_thrd) { |
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| 103 | unsigned long long next = rdtscl(); |
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| 104 | if(next > (last + 500000000)) { |
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[10ba012] | 105 | if(try_lock(stats_thrd->stats.lock __cfaabi_dbg_ctx2)) { |
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[137974ae] | 106 | push(this.stats.sendfile, stats_thrd->stats.send); |
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| 107 | unlock(stats_thrd->stats.lock); |
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| 108 | last = next; |
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| 109 | } |
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| 110 | } |
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| 111 | } |
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[481ee28] | 112 | } |
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| 113 | |
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[7f0ac12] | 114 | //============================================================================================= |
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| 115 | // Self Accepting Worker Thread |
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| 116 | //============================================================================================= |
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| 117 | void ?{}( AcceptWorker & this ) { |
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[329e26a] | 118 | size_t cli = rand() % options.clopts.cltr_cnt; |
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| 119 | ((thread&)this){ "Server Worker Thread", *options.clopts.instance[cli], 64000 }; |
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| 120 | options.clopts.thrd_cnt[cli]++; |
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[7f0ac12] | 121 | this.done = false; |
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[0aec496] | 122 | } |
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| 123 | |
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[7f0ac12] | 124 | void main( AcceptWorker & this ) { |
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[e235429] | 125 | park(); |
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[137974ae] | 126 | unsigned long long last = rdtscl(); |
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[7f0ac12] | 127 | /* paranoid */ assert( this.conn.pipe[0] != -1 ); |
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| 128 | /* paranoid */ assert( this.conn.pipe[1] != -1 ); |
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[e95a117] | 129 | for() { |
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[10ba012] | 130 | if( options.log ) mutex(sout) sout | "=== Accepting connection ==="; |
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[7f0ac12] | 131 | int fd = cfa_accept4( this.sockfd, this.[addr, addrlen, flags], CFA_IO_LAZY ); |
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[8e3034d] | 132 | if(fd < 0) { |
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| 133 | if( errno == ECONNABORTED ) break; |
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[ee59ede] | 134 | if( this.done && (errno == EINVAL || errno == EBADF) ) break; |
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[8e3034d] | 135 | abort( "accept error: (%d) %s\n", (int)errno, strerror(errno) ); |
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| 136 | } |
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[4f762d3] | 137 | if(this.done) break; |
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[e95a117] | 138 | |
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[10ba012] | 139 | if( options.log ) mutex(sout) sout | "=== New connection" | fd | "" | ", waiting for requests ==="; |
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[7f0ac12] | 140 | size_t len = options.socket.buflen; |
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| 141 | char buffer[len]; |
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[137974ae] | 142 | handle_connection( this.conn, fd, buffer, len, 0p, last ); |
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[0aec496] | 143 | |
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[10ba012] | 144 | if( options.log ) mutex(sout) sout | "=== Connection closed ==="; |
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[7f0ac12] | 145 | } |
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| 146 | } |
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[0aec496] | 147 | |
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[561dd26] | 148 | |
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[7f0ac12] | 149 | //============================================================================================= |
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| 150 | // Channel Worker Thread |
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| 151 | //============================================================================================= |
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| 152 | void ?{}( ChannelWorker & this ) { |
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[329e26a] | 153 | size_t cli = rand() % options.clopts.cltr_cnt; |
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| 154 | ((thread&)this){ "Server Worker Thread", *options.clopts.instance[cli], 64000 }; |
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| 155 | options.clopts.thrd_cnt[cli]++; |
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[7f0ac12] | 156 | this.done = false; |
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| 157 | } |
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[561dd26] | 158 | |
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[7f0ac12] | 159 | void main( ChannelWorker & this ) { |
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| 160 | park(); |
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[137974ae] | 161 | unsigned long long last = rdtscl(); |
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[7f0ac12] | 162 | /* paranoid */ assert( this.conn.pipe[0] != -1 ); |
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| 163 | /* paranoid */ assert( this.conn.pipe[1] != -1 ); |
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| 164 | for() { |
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| 165 | size_t len = options.socket.buflen; |
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| 166 | char buffer[len]; |
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| 167 | PendingRead p; |
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[10ba012] | 168 | p.next = 0p; |
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[7f0ac12] | 169 | p.in.buf = (void*)buffer; |
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| 170 | p.in.len = len; |
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| 171 | push(*this.queue, &p); |
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[561dd26] | 172 | |
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[10ba012] | 173 | if( options.log ) mutex(sout) sout | "=== Waiting new connection ==="; |
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[137974ae] | 174 | handle_connection( this.conn, p.out.fd, buffer, len, &p.f, last ); |
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[561dd26] | 175 | |
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[10ba012] | 176 | if( options.log ) mutex(sout) sout | "=== Connection closed ==="; |
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[7f0ac12] | 177 | if(this.done) break; |
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| 178 | } |
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| 179 | } |
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[0aec496] | 180 | |
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[7f0ac12] | 181 | extern "C" { |
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| 182 | extern int accept4(int sockfd, struct sockaddr *addr, socklen_t *addrlen, int flags); |
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| 183 | } |
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[97748ee] | 184 | |
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[329e26a] | 185 | void ?{}( Acceptor & this, int cli ) { |
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| 186 | ((thread&)this){ "Server Acceptor Thread", *options.clopts.instance[cli], 64000 }; |
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| 187 | options.clopts.thrd_cnt[cli]++; |
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[7f0ac12] | 188 | this.done = false; |
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| 189 | } |
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[b57db73] | 190 | |
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[07997cd] | 191 | static inline __s32 get_res( io_future_t & this ) { |
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| 192 | if( this.result < 0 ) {{ |
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| 193 | errno = -this.result; |
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| 194 | return -1; |
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| 195 | }} |
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| 196 | return this.result; |
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| 197 | } |
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| 198 | |
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| 199 | static inline void push_connection( Acceptor & this, int fd ) { |
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| 200 | PendingRead * p = 0p; |
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| 201 | for() { |
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| 202 | if(this.done) return; |
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| 203 | p = pop(*this.queue); |
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| 204 | if(p) break; |
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| 205 | yield(); |
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| 206 | this.stats.creates++; |
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| 207 | }; |
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| 208 | |
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| 209 | p->out.fd = fd; |
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| 210 | async_recv(p->f, p->out.fd, p->in.buf, p->in.len, 0, CFA_IO_LAZY); |
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| 211 | } |
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| 212 | |
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| 213 | // #define ACCEPT_SPIN |
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| 214 | #define ACCEPT_MANY |
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[c25338d] | 215 | |
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[7f0ac12] | 216 | void main( Acceptor & this ) { |
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| 217 | park(); |
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[137974ae] | 218 | unsigned long long last = rdtscl(); |
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[c25338d] | 219 | |
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| 220 | #if defined(ACCEPT_SPIN) |
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[7f0ac12] | 221 | if( options.log ) sout | "=== Accepting connection ==="; |
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| 222 | for() { |
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| 223 | int fd = accept4(this.sockfd, this.[addr, addrlen, flags]); |
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| 224 | if(fd < 0) { |
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| 225 | if( errno == EWOULDBLOCK) { |
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[137974ae] | 226 | this.stats.eagains++; |
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[7f0ac12] | 227 | yield(); |
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| 228 | continue; |
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[97748ee] | 229 | } |
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[7f0ac12] | 230 | if( errno == ECONNABORTED ) break; |
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| 231 | if( this.done && (errno == EINVAL || errno == EBADF) ) break; |
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| 232 | abort( "accept error: (%d) %s\n", (int)errno, strerror(errno) ); |
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| 233 | } |
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[137974ae] | 234 | this.stats.accepts++; |
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| 235 | |
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[7f0ac12] | 236 | if(this.done) return; |
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[97748ee] | 237 | |
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[7f0ac12] | 238 | if( options.log ) sout | "=== New connection" | fd | "" | ", waiting for requests ==="; |
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[97748ee] | 239 | |
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[07997cd] | 240 | if(fd) push_connection(this, fd); |
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[ee59ede] | 241 | |
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[137974ae] | 242 | if (stats_thrd) { |
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| 243 | unsigned long long next = rdtscl(); |
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| 244 | if(next > (last + 500000000)) { |
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| 245 | if(try_lock(stats_thrd->stats.lock)) { |
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| 246 | push(this.stats, stats_thrd->stats.accpt); |
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| 247 | unlock(stats_thrd->stats.lock); |
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| 248 | last = next; |
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| 249 | } |
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| 250 | } |
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| 251 | } |
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| 252 | |
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[7f0ac12] | 253 | if( options.log ) sout | "=== Accepting connection ==="; |
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[0aec496] | 254 | } |
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[c25338d] | 255 | |
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[07997cd] | 256 | #elif defined(ACCEPT_MANY) |
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[c25338d] | 257 | const int nacc = 10; |
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| 258 | io_future_t results[nacc]; |
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| 259 | |
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| 260 | for(i; nacc) { |
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| 261 | io_future_t & res = results[i]; |
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| 262 | reset(res); |
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| 263 | /* paranoid */ assert(!available(res)); |
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| 264 | if( options.log ) mutex(sout) sout | "=== Re-arming accept no" | i | " ==="; |
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| 265 | async_accept4(res, this.sockfd, this.[addr, addrlen, flags], CFA_IO_LAZY); |
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| 266 | } |
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| 267 | |
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| 268 | for() { |
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| 269 | if (stats_thrd) { |
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| 270 | unsigned long long next = rdtscl(); |
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| 271 | if(next > (last + 500000000)) { |
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| 272 | if(try_lock(stats_thrd->stats.lock __cfaabi_dbg_ctx2)) { |
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| 273 | push(this.stats, stats_thrd->stats.accpt); |
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| 274 | unlock(stats_thrd->stats.lock); |
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| 275 | last = next; |
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| 276 | } |
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| 277 | } |
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| 278 | } |
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| 279 | |
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| 280 | for(i; nacc) { |
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| 281 | io_future_t & res = results[i]; |
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| 282 | if(available(res)) { |
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| 283 | if( options.log ) mutex(sout) sout | "=== Accept no " | i | "completed with result" | res.result | "==="; |
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| 284 | int fd = get_res(res); |
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| 285 | reset(res); |
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| 286 | this.stats.accepts++; |
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| 287 | if(fd < 0) { |
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| 288 | if( errno == ECONNABORTED ) continue; |
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| 289 | if( this.done && (errno == EINVAL || errno == EBADF) ) continue; |
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| 290 | abort( "accept error: (%d) %s\n", (int)errno, strerror(errno) ); |
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| 291 | } |
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| 292 | push_connection( this, fd ); |
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| 293 | |
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| 294 | /* paranoid */ assert(!available(res)); |
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| 295 | if( options.log ) mutex(sout) sout | "=== Re-arming accept no" | i | " ==="; |
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| 296 | async_accept4(res, this.sockfd, this.[addr, addrlen, flags], CFA_IO_LAZY); |
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| 297 | } |
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| 298 | } |
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| 299 | if(this.done) return; |
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| 300 | |
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| 301 | if( options.log ) mutex(sout) sout | "=== Waiting for any accept ==="; |
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| 302 | this.stats.eagains++; |
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| 303 | wait_any(results, nacc); |
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| 304 | |
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| 305 | if( options.log ) mutex(sout) { |
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| 306 | sout | "=== Acceptor wake-up ==="; |
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| 307 | for(i; nacc) { |
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| 308 | io_future_t & res = results[i]; |
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| 309 | sout | i | "available:" | available(res); |
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| 310 | } |
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| 311 | } |
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| 312 | |
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| 313 | } |
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| 314 | |
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| 315 | for(i; nacc) { |
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| 316 | wait(results[i]); |
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| 317 | } |
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| 318 | #else |
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| 319 | #error no accept algorithm specified |
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| 320 | #endif |
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[7f0ac12] | 321 | } |
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