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fork off n children and keep the parent process as a monitor
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parent
d1c602df07
commit
bb073bdff3
1 changed files with 68 additions and 58 deletions
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@ -32,16 +32,19 @@ int main(int argc, const char* argv[]) {
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}
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const char* NUM_FORKS_PARAMETER = "-n";
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const char* numForksIncludingParentString = getCmdOption(argc, argv, NUM_FORKS_PARAMETER);
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if (numForksIncludingParentString) {
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int numForksIncludingParent = atoi(numForksIncludingParentString);
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qDebug() << "Starting" << numForksIncludingParent << "assignment clients.";
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const char* numForksString = getCmdOption(argc, argv, NUM_FORKS_PARAMETER);
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int processID = 0;
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int numForks = 0;
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if (numForksString) {
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numForks = atoi(numForksString);
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qDebug() << "Starting" << numForks << "assignment clients.";
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// fire off as many children as we need (this is one less than the parent since the parent will run as well)
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for (int i = 0; i < numForksIncludingParent - 1; i++) {
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for (int i = 0; i < numForks; i++) {
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processID = fork();
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if (processID == 0) {
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@ -51,6 +54,9 @@ int main(int argc, const char* argv[]) {
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}
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}
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if (processID == 0 || numForks == 0) {
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// this is one of the child forks or there is a single assignment client, continue assignment-client execution
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// create a NodeList as an unassigned client
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NodeList* nodeList = NodeList::createInstance(NODE_TYPE_UNASSIGNED);
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@ -110,4 +116,8 @@ int main(int argc, const char* argv[]) {
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nodeList->clear();
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}
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}
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} else {
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// don't bail until all children have finished
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wait(NULL);
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}
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}
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