armv7 dmb - BONGDATV

이런 상황에서 집단 휴진에 동참하겠다는 뜻을 밝힌 일부 동네 병·의원이 나오면서 지역 주민들의 불만도 고조되고 있습니다. 각 지역 맘카페에는 ...

ARMv7. ARM is also a weakly-ordered CPU, so again, the compiler must emit memory barrier instructions to guarantee acquire semantics on multicore. On ARMv7, dmb ish is the best available instruction, despite being a full memory barrier. Here are the timings for each iteration of our example's main loop, running on the test machines shown above:

ARMv7-m指令 (杂项（miscellaneous）指令 (CLREX, DBG, DMB, DSB, ISB, IT, NOP, PLD,…: ARMv7-m指令 (杂项（miscellaneous）指令, 数据处理（data-processing）指令, 协处理器（coprocessor）指令, 跳转（branch）指令, 状态寄存器访问（status register access）指令, 异常生成（exception-generating）指令, 数据读写（load and store）指令 ...

In particular, the cases show how the use of the ARM memory barrier instructions DMB and DSB can be used to provide the necessary safeguards to limits memory ordering effects at the required synchronization points.