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63 lines
1.8 KiB
63 lines
1.8 KiB
// Ovidiu Gheorghioiu <ovy@alum.mit.edu>, (C) 2006
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// License: GNU General Public License V2
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//
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// Stress-test the AtomicString class for thread safety. Run on SMP for maximum exposure.
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#include <stdio.h>
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#include <pthread.h>
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#include <stdlib.h>
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#include "atomicstring.h"
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void *
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Worker(void *num) {
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srand( reinterpret_cast<int>( num ) );
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TQString base = "str";
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// create 5 strings, destroy them, copy them around
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const int kNumStrings = 5;
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AtomicString *atStrings[kNumStrings * 2];
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for( int i = 0; i < kNumStrings * 2; i++ ) atStrings[i] = NULL;
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const int kIterations = 100000;
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for( int i = 0; i < kIterations; i++ ) {
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int k = rand() % (kNumStrings * 2);
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if( atStrings[k] == NULL ) {
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// the upper half are sometimes copies of the corresponding
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// lower half strings
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if( k >= kNumStrings && atStrings[k % kNumStrings] != NULL ) {
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atStrings[k] = new AtomicString( *atStrings[k % kNumStrings] );
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} else {
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atStrings[k] = new AtomicString( base + TQString::number( k ) );
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}
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} else {
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// check the string; could be either upper or lower
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TQString str = atStrings[k]->string();
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if( str != base + TQString::number( k )
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&& str != base + TQString::number( k % kNumStrings ) ) {
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tqFatal( "unexpected atStrings[%d]: %s", k, str.ascii() );
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}
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delete atStrings[k];
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atStrings[k] = NULL;
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}
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}
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return NULL;
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}
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int main() {
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const int kWorkers = 2;
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pthread_t workers[kWorkers];
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for( int i = 0; i < kWorkers; i++ ) {
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if( pthread_create(& workers[i], NULL,
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& Worker,
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reinterpret_cast<void *>(i))
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!= 0)
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tqFatal( "Could not create thread %d", i );
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}
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for( int i = 0; i < kWorkers; i++ ) {
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void *thread_return;
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pthread_join( workers[i], &thread_return );
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}
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}
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