mirror of
https://github.com/fluencelabs/wasmer
synced 2024-12-12 22:05:33 +00:00
49 lines
1.3 KiB
C
49 lines
1.3 KiB
C
/*
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* Copyright 2016 The Emscripten Authors. All rights reserved.
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* Emscripten is available under two separate licenses, the MIT license and the
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* University of Illinois/NCSA Open Source License. Both these licenses can be
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* found in the LICENSE file.
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*/
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#include <stdio.h>
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#include <sys/mman.h>
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#include <assert.h>
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#include <unistd.h>
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int main(int argc, char* argv[]) {
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// Alignment check for mmap below should be consistent with the reported page size
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// For now, just require it to be 16384
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assert(getpagesize() == 16384);
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assert(sysconf(_SC_PAGESIZE) == 16384);
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for (int i = 0; i < 10; i++) {
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int* map = (int*)mmap(0, 5000, PROT_READ | PROT_WRITE,
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MAP_SHARED | MAP_ANON, -1, 0);
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assert(map != MAP_FAILED);
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assert(((int)map) % 16384 == 0); // aligned
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assert(munmap(map, 5000) == 0);
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}
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const int NUM_BYTES = 8 * 1024 * 1024;
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const int NUM_INTS = NUM_BYTES / sizeof(int);
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int* map = (int*)mmap(0, NUM_BYTES, PROT_READ | PROT_WRITE,
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MAP_SHARED | MAP_ANON, -1, 0);
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assert(map != MAP_FAILED);
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int i;
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for (i = 0; i < NUM_INTS; i++) {
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map[i] = i;
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}
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for (i = 0; i < NUM_INTS; i++) {
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assert(map[i] == i);
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}
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assert(munmap(map, NUM_BYTES) == 0);
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printf("hello,world");
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return 0;
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}
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