49 lines
1 KiB
C
49 lines
1 KiB
C
#define _GNU_SOURCE
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#include <sys/socket.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "pipe_utils.c"
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#define LKM_DEVICE "/dev/lkm"
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// where does this come from?
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#define OBJS_PER_SLAB 42
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#define PIPE_BUFFER (OBJS_PER_SLAB * 10)
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int pipes[PIPE_BUFFER][2];
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int
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main(void)
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{
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printf("main: start\n");
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FILE *device = fopen(LKM_DEVICE, "r+");
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printf("main: allocating objects before loading module: %u objects\n",
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PIPE_BUFFER);
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for (size_t i = 0; i < PIPE_BUFFER; i++) {
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allocation_primitive(pipes[i]);
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}
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printf("main: fopen: %p\n", device);
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if (!device) {
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printf(
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"main: fopen: Error opening %s. Make sure the kernel module is loaded\n",
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LKM_DEVICE);
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exit(1);
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}
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printf("main: draining lower page free lists: %u objects\n",
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PIPE_BUFFER);
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for (size_t i = 0; i < PIPE_BUFFER; i++) {
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// TODO: Time allocation to figure out which slab is use
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allocation_primitive(pipes[i]);
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}
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fclose(device);
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printf("main: done\n");
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}
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