已合并
替换rdtscp指令集为rdtsc，兼容不存在该指令集的机器 #8998
zhangxubo创建于 2月14日
替换rdtscp指令集为rdtsc，兼容不存在该指令集的机器 #8998
已合并
共 1 个文件变更+4-1
| @@ -69,7 +69,10 @@ public: | |||
| 69 | { | 69 | { |
| 70 | 70 | ||
| 71 | uint32_t low, high; | 71 | uint32_t low, high; |
| 72 | - __asm__ __volatile__("rdtscp" : "=a"(low), "=d"(high) : : "%rcx"); | 72 | + __asm__ __volatile__("mfence\n\t" |
| 73 | + "rdtsc" | ||
| 74 | + : "=a"(low), "=d"(high) | ||
| 75 | + ); | ||
| 73 | return (((uint64_t)high << 32) | low); | 76 | return (((uint64_t)high << 32) | low); |
| 74 | 77 | ||
| 75 | unsigned long cval = 0; | 78 | unsigned long cval = 0; |