INNER CODE UNIT · C++

alignment

tiann/epic · library/src/main/cpp/epic.cpp:199

    unsigned alignment = (unsigned)((unsigned long long)addr % pagesize);
    LOGV("munprotect page size: %d, alignment: %d", pagesize, alignment);

    int i = mprotect((void *) (addr - alignment), (size_t) (alignment + len),
                     PROT_READ | PROT_WRITE | PROT_EXEC);
    if (i == -1) {
        LOGV("mprotect failed: %s (%d)", strerror(errno), errno);
        return JNI_FALSE;
    }
    return JNI_TRUE;
}

jboolean epic_cacheflush(JNIEnv *env, jclass, jlong addr, jlong len) {
#if defined(__arm__)
    int i = cacheflush(addr, addr + len, 0);
    LOGV("arm cacheflush for, %ul", addr);
    if (i == -1) {
        LOGV("cache flush failed: %s (%d)", strerror(errno), errno);

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