__global__ void HIP_FUNCTION(testKernel,int *g_odata) { // access thread id const unsigned int tid = hipBlockDim_x * hipBlockIdx_x + hipThreadIdx_x; // Test various atomic instructions // Arithmetic atomic instructions // Atomic addition atomicAdd(&g_odata[0], 10); // Atomic subtraction (final should be 0) atomicSub(&g_odata[1], 10); // Atomic exchange atomicExch(&g_odata[2], tid); // Atomic maximum atomicMax(&g_odata[3], tid); // Atomic minimum atomicMin(&g_odata[4], tid); // Atomic increment (modulo 17+1) //atomicInc((unsigned int *)&g_odata[5], 17); atomicInc((unsigned int *)&g_odata[5]); // Atomic decrement // atomicDec((unsigned int *)&g_odata[6], 137); atomicDec((unsigned int *)&g_odata[6]); // Atomic compare-and-swap atomicCAS(&g_odata[7], tid-1, tid); // Bitwise atomic instructions // Atomic AND atomicAnd(&g_odata[8], 2*tid+7); // Atomic OR atomicOr(&g_odata[9], 1 << tid); // Atomic XOR atomicXor(&g_odata[10], tid); }
void decref() { if (atomicDec(m_refcount) == 0) delete this; }