peri4
57f8c1313e
* runtime - loading and translating * design-time - works with *.ts file (pip_tr utility) * compile-time - CMake macro for compile *.ts
324 lines
8.2 KiB
C++
324 lines
8.2 KiB
C++
/*
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PIP - Platform Independent Primitives
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Process
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Ivan Pelipenko peri4ko@yandex.ru
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "piliterals_time.h"
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#include "pitime.h"
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#include "pitranslator.h"
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#ifndef MICRO_PIP
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# include "piincludes_p.h"
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# include "piprocess.h"
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# ifndef WINDOWS
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# include <csignal>
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# include <sys/wait.h>
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# endif
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# ifdef MAC_OS
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# include <crt_externs.h>
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# endif
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//! \class PIProcess piprocess.h
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//! \~\details
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//! \~english
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//! This class able to start external executables, watch for them,
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//! grab output and exit code.
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//!
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//! \~russian
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//!
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//!
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//! \~english \section PIProcess_sec0 Synopsis
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//! \~russian \section PIProcess_sec0 Краткий обзор
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//! \~english
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//! External executable can be started with control or fully independent
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//! from application.\n
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//! Start with control allow you to wait for finish, grab output
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//! and terminate it at any time.\n
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//! You can change working directory and environment of executable.\n
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//!
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//! \~russian
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//!
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//!
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//! \~english \section PIProcess_sec1 Usage
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//! \~russian \section PIProcess_sec1 Использование
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//! \~english
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//!
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//!
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//! \~russian
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//!
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PRIVATE_DEFINITION_START(PIProcess)
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# ifdef WINDOWS
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STARTUPINFOA si;
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PROCESS_INFORMATION pi;
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# else
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pid_t pid;
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# endif
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FILE *tf_in, *tf_out, *tf_err;
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PRIVATE_DEFINITION_END(PIProcess)
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PIProcess::PIProcess(): PIThread() {
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exit_code = -1;
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# ifdef WINDOWS
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PRIVATE->pi.dwProcessId = 0;
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# else
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PRIVATE->pid = 0;
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# endif
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is_exec = false;
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g_in = g_out = g_err = false;
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t_in = t_out = t_err = false;
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PRIVATE->tf_in = PRIVATE->tf_out = PRIVATE->tf_err = 0;
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env = PIProcess::currentEnvironment();
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}
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PIProcess::~PIProcess() {
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PIThread::stopAndWait();
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if (t_in) f_in.remove();
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if (t_out) f_out.remove();
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if (t_err) f_err.remove();
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}
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void PIProcess::exec_() {
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is_exec = false;
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startOnce();
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// cout << "exec wait" << endl;
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while (!is_exec)
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piMinSleep();
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// cout << "exec end" << endl;
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}
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void PIProcess::startProc(bool detached) {
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// cout << "run" << endl;
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PIString str;
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/// arguments convertion
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int as = 0;
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const char * argscc[args.size() + 1];
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int argsl[args.size()];
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for (int i = 0; i < args.size_s(); ++i) {
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argscc[i] = args[i].data();
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argsl[i] = strlen(argscc[i]);
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as += argsl[i] + 3;
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}
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argscc[args.size()] = 0;
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# ifdef WINDOWS
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char * a = new char[as];
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memset(a, ' ', as - 1);
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as = 0;
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for (int i = 0; i < args.size_s(); ++i) {
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str = args[i];
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a[as] = '"';
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memcpy(&(a[as + 1]), argscc[i], argsl[i]);
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a[as + argsl[i] + 1] = '"';
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as += argsl[i] + 3;
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}
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a[as - 1] = 0;
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// piCout << a;
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# endif
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# ifndef WINDOWS
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/// environment convertion
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const char * envcc[env.size() + 1];
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envcc[env.size_s()] = 0;
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for (int i = 0; i < env.size_s(); ++i) {
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envcc[i] = env[i].data();
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}
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# endif
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/// files for stdin/out/err
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t_in = t_out = t_err = false;
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if (f_in.path().isEmpty()) {
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f_in.openTemporary(PIIODevice::ReadWrite);
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t_in = true;
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}
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if (f_out.path().isEmpty()) {
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f_out.openTemporary(PIIODevice::ReadWrite);
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t_out = true;
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}
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if (f_err.path().isEmpty()) {
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f_err.openTemporary(PIIODevice::ReadWrite);
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t_err = true;
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}
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str = args.front();
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is_exec = true;
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if (!detached) execStarted(str);
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# ifndef WINDOWS
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int pid_ = fork();
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if (!detached) PRIVATE->pid = pid_;
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if (pid_ == 0) {
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# endif
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PRIVATE->tf_in = PRIVATE->tf_out = PRIVATE->tf_err = 0;
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// cout << "exec " << tf_in << ", " << tf_out << ", " << tf_err << endl;
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// cout << f_out.path() << endl;
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if (g_in) PRIVATE->tf_in = freopen(f_in.path().data(), "r", stdin);
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if (g_out) PRIVATE->tf_out = freopen(f_out.path().data(), "w", stdout);
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if (g_err) PRIVATE->tf_err = freopen(f_err.path().data(), "w", stderr);
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# ifndef WINDOWS
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if (!wd.isEmpty())
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if (!chdir(wd.data())) piCoutObj << "Error while set working directory";
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# endif
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# ifdef WINDOWS
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GetStartupInfoA(&(PRIVATE->si));
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memset(&(PRIVATE->pi), 0, sizeof(PRIVATE->pi));
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if (CreateProcessA(0, // No module name (use command line)
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a, // Command line
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0, // Process handle not inheritable
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0, // Thread handle not inheritable
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false, // Set handle inheritance to FALSE
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detached ? DETACHED_PROCESS /*CREATE_NEW_CONSOLE*/ : 0, // Creation flags
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0, // envcc, // Use environment
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wd.isEmpty() ? 0 : wd.data(), // Use working directory
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&(PRIVATE->si), // Pointer to STARTUPINFO structure
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&(PRIVATE->pi))) // Pointer to PROCESS_INFORMATION structure
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{
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if (!detached) {
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WaitForSingleObject(PRIVATE->pi.hProcess, INFINITE);
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DWORD code = -1;
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if (GetExitCodeProcess(PRIVATE->pi.hProcess, &code) != 0) exit_code = code;
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}
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CloseHandle(PRIVATE->pi.hThread);
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CloseHandle(PRIVATE->pi.hProcess);
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} else
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piCoutObj << "\"CreateProcess\" error: %1"_tr("PIProcess").arg(errorString());
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# else
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// cout << "exec " << tf_in << ", " << tf_out << ", " << tf_err << endl;
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if (execve(str.data(), (char * const *)argscc, (char * const *)envcc) < 0)
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piCoutObj << "\"execve" << str << args << "\" error :" << errorString();
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}
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else {
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piMinSleep();
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// cout << "wait" << endl;
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if (!detached) {
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wait(&exit_code);
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pid_ = 0;
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if (!detached) PRIVATE->pid = pid_;
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// cout << "wait done" << endl;
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}
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}
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# endif
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if (!detached) execFinished(str, exit_code);
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is_exec = false;
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# ifdef WINDOWS
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delete[] a;
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# endif
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}
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void PIProcess::terminate() {
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# ifdef WINDOWS
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if (is_exec)
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if (!TerminateProcess(PRIVATE->pi.hProcess, 0)) return;
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PRIVATE->pi.dwProcessId = 0;
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# else
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if (is_exec) kill(PRIVATE->pid, SIGKILL);
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PRIVATE->pid = 0;
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# endif
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}
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bool PIProcess::waitForFinish() {
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return PIThread::waitForFinish(1_m);
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}
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void PIProcess::execIndependent(const PIString & program, const PIStringList & args_) {
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PIProcess p;
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p.args << program << args_;
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p.startProc(true);
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}
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int PIProcess::pID() const {
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# ifdef WINDOWS
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return PRIVATE->pi.dwProcessId;
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# else
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return PRIVATE->pid;
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# endif
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}
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int PIProcess::currentPID() {
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# ifdef WINDOWS
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return GetCurrentProcessId();
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# else
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return getpid();
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# endif
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}
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PIStringList PIProcess::currentEnvironment() {
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PIStringList l;
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int i = 0;
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while (environ[i] != 0) {
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l << environ[i];
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++i;
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}
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return l;
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}
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void PIProcess::run() {
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startProc(false);
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}
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void PIProcess::removeEnvironmentVariable(const PIString & variable) {
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PIString s;
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for (int i = 0; i < env.size_s(); ++i) {
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s = env[i];
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if (s.left(s.find("=")).trimmed() == variable) {
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env.remove(i);
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--i;
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}
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}
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}
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void PIProcess::setEnvironmentVariable(const PIString & variable, const PIString & value) {
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PIString s, v;
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for (int i = 0; i < env.size_s(); ++i) {
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s = env[i];
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v = s.left(s.find("=")).trimmed();
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if (v == variable) {
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env[i] = v + "=" + value;
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return;
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}
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}
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env << variable + "=" + value;
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}
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PIString PIProcess::getEnvironmentVariable(const PIString & variable) {
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PIStringList env_ = currentEnvironment();
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PIString s, v;
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for (int i = 0; i < env_.size_s(); ++i) {
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s = env_[i];
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v = s.left(s.find("=")).trimmed();
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if (v == variable) {
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return s.right(s.size() - 1 - s.find("=")).trimmed();
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}
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}
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return PIString();
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}
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#endif // MICRO_PIP
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