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authorTom Smeding <tom.smeding@gmail.com>2018-08-20 23:51:16 +0200
committerTom Smeding <tom.smeding@gmail.com>2018-08-20 23:52:03 +0200
commit57a1091dfb2c6403cbe63c7ddca8acc7e3d0f940 (patch)
treea997ed523a853d9d5fff7d5b90b12a180b00a231 /competition/process.cpp
parentf0b6d1b9c46578183b427bcec4bbe99ab10c7b97 (diff)
Switch to https://git.tomsmeding.com/competitionHEADmaster
Diffstat (limited to 'competition/process.cpp')
-rw-r--r--competition/process.cpp136
1 files changed, 0 insertions, 136 deletions
diff --git a/competition/process.cpp b/competition/process.cpp
deleted file mode 100644
index a728401..0000000
--- a/competition/process.cpp
+++ /dev/null
@@ -1,136 +0,0 @@
-#include <iostream>
-#include <cstdlib>
-#include <fcntl.h>
-#include <sys/wait.h>
-#include "process.h"
-#include "error.h"
-
-
-Process::Process(const string_view execname)
- : execname(execname) {}
-
-void Process::redirectStderr(const string_view fname) {
- stderrRedirect = fname;
-}
-
-void Process::run() {
- int stderrfd = -1;
- if (stderrRedirect) {
- stderrfd = open(stderrRedirect->data(), O_WRONLY|O_CREAT|O_TRUNC, 0644);
- if (stderrfd < 0) {
- perror("open");
- cout << endl << "ERROR: Cannot open player log file '" << *stderrRedirect << "'" << endl;
- throw StopCompetitionError();
- }
- }
-
- int pipefds[2];
- if (pipe(pipefds) < 0) {
- perror("pipe");
- exit(1);
- }
- infd = pipefds[1];
- int child_in = pipefds[0];
-
- if (pipe(pipefds) < 0) {
- perror("pipe");
- exit(1);
- }
- outfd = pipefds[0];
- int child_out = pipefds[1];
-
- pid = fork();
- if (pid < 0) {
- perror("fork");
- exit(1);
- }
-
- if (pid == 0) {
- if (stderrRedirect) dup2(stderrfd, STDERR_FILENO);
- dup2(child_in, STDIN_FILENO);
- dup2(child_out, STDOUT_FILENO);
- close(infd);
- close(outfd);
-
- execlp(execname.data(), execname.data(), NULL);
- cerr << endl << "ERROR: Error executing player file '" << execname << "'" << endl;
- exit(255);
- }
-
- if (stderrfd >= 0) close(stderrfd);
- close(child_in);
- close(child_out);
-}
-
-void Process::wait() {
- while (true) {
- int status;
- if (waitpid(pid, &status, 0) < 0) {
- if (errno == EINTR) continue;
- perror("waitpid");
- break;
- }
- if (WIFEXITED(status)) break;
- }
-}
-
-void Process::stop() {
- if (pid != -1) kill(pid, SIGSTOP);
-}
-
-void Process::unStop() {
- if (pid != -1) kill(pid, SIGCONT);
-}
-
-bool Process::writeLine(const string_view line) {
- string str;
- str.reserve(line.size() + 1);
- str += line;
- str += '\n';
-
- size_t cursor = 0;
- while (cursor < str.size()) {
- ssize_t nw = write(infd, str.data() + cursor, str.size() - cursor);
- if (nw < 0) {
- if (errno == EINTR) continue;
- perror("write");
- return false;
- }
- cursor += nw;
- }
-
- return true;
-}
-
-optional<string> Process::readLine() {
- size_t idx = readBuf.find('\n');
- if (idx != string::npos) {
- string res = readBuf.substr(0, idx);
- readBuf = readBuf.substr(idx + 1);
- return res;
- }
-
- while (true) {
- string s(1024, '\0');
- ssize_t nr = read(outfd, &s[0], s.size());
- if (nr < 0) {
- if (errno == EINTR) continue;
- perror("read");
- return nullopt;
- }
- s.resize(nr);
-
- idx = s.find('\n');
- if (idx != string::npos) {
- string res = readBuf + s.substr(0, idx);
- readBuf = s.substr(idx + 1);
- return res;
- }
-
- readBuf += s;
- }
-}
-
-void Process::terminate() {
- if (pid != -1) kill(pid, SIGTERM);
-}