105 lines
2.2 KiB
C++
105 lines
2.2 KiB
C++
/*
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PIP - Platform Independent Primitives
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Single application
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Copyright (C) 2016 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 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 General Public License for more details.
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You should have received a copy of the GNU 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 "pisingleapplication.h"
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#include "pisharedmemory.h"
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#define SHM_SIZE 1024*32
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PISingleApplication::PISingleApplication(const PIString & app_name): PIThread() {
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first = true;
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started = false;
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sacnt = 0;
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shm = new PISharedMemory("sa_" + app_name, SHM_SIZE);
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start(100);
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}
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PISingleApplication::~PISingleApplication() {
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stop();
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if (!waitForFinish(5000))
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terminate();
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delete shm;
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}
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bool PISingleApplication::isFirst() const {
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waitFirst();
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return first;
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}
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void PISingleApplication::sendMessage(const PIByteArray & m) {
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waitFirst();
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PIByteArray ba;
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int lm[2] = {0, 0};
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for (;;) {
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shm->read(lm, 8);
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if (lm[1] == 0) break;
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piMSleep(10);
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}
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ba << sacnt << int(1) << m;
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shm->write(ba);
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}
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void PISingleApplication::begin() {
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int cnt[2] = {0, 0};
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for (int i = 0; i < 5; ++i) {
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cnt[1] = cnt[0];
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shm->read(cnt, 4);
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if (cnt[0] != cnt[1]) {
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first = false;
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break;
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}
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piMSleep(100);
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}
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piCoutObj << "started" << first << shm->size();
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readed.reserve(shm->size());
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started = true;
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}
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void PISingleApplication::run() {
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if (!first) return;
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++sacnt;
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shm->write(&sacnt, 4);
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piCoutObj << "write" << sacnt;
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readed = shm->readAll();
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int t(0), nm(0);
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readed >> t >> nm;
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if (nm != 0) {
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PIByteArray msg;
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readed >> msg;
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if (!msg.isEmpty()) {
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messageReceived(msg);
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piCoutObj << "message" << msg;
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}
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int wi[2] = {sacnt, 0};
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shm->write(wi, 8);
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}
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}
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void PISingleApplication::waitFirst() const {
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while (!started)
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piMSleep(50);
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}
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