Nils O. Selåsdal
70 lines
950 B
C
70 lines
950 B
C
#include <stdio.h>
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#include "ucore/atomic.h"
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UC_ATOMIC(unsigned int) i;
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unsigned int get_i(void)
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{
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return UC_ATOMIC_GET(&i);
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}
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unsigned int inc_i(void)
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{
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return UC_ATOMIC_INC(&i);
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}
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unsigned int dec_i(void)
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{
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return UC_ATOMIC_DEC(&i);
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}
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unsigned int sub_i(unsigned int v)
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{
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return UC_ATOMIC_SUB(&i, v);
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}
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unsigned int add_i(unsigned int v)
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{
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return UC_ATOMIC_ADD(&i, v);
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}
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unsigned int get_i_membar()
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{
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unsigned int r;
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UC_MEM_BARRIER();
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r = i;
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UC_MEM_BARRIER();
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return r;
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}
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unsigned int get_i_compbar()
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{
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unsigned int r;
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UC_COMPILER_BARRIER();
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r = i;
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UC_COMPILER_BARRIER();
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return r;
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}
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int main(int argc, char *argv[])
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{
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printf("i: %u\n", get_i());
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inc_i();
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printf("i: %u\n", get_i());
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inc_i();
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dec_i();
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printf("i: %u\n", get_i());
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add_i(100);
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printf("i: %u\n", get_i());
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sub_i(50);
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printf("i: %u\n", get_i_membar());
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return 0;
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}
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