mirror of
https://gitee.com/acl-dev/acl.git
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9697f95b8f
This reverts commit 15d999759e
.
116 lines
2.1 KiB
C++
116 lines
2.1 KiB
C++
#include "stdafx.h"
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#include <sys/mman.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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static acl::string __fpath("./tmp.dmp");
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static off_t __max = 1000000;
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static void* thread_main(void* arg)
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{
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sleep(10);
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printf("thread started\r\n");
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char* ptr = (char*) arg;
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for (off_t i = 0; i < __max; i++)
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{
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int ch = *ptr++;
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if (i % 9999999 == 0)
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printf("get ch: %c\r\n", ch);
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}
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return NULL;
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}
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static void usage(const char* procname)
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{
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printf("usage: %s -h [help] -f file_path -n file_size -u [call munmap] -o get|set\r\n", procname);
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}
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int main(int argc, char* argv[])
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{
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acl::string action("get");
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bool unuse = false;
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int ch;
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while ((ch = getopt(argc, argv, "hf:n:uo:")) > 0)
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{
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switch (ch)
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{
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case 'h':
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usage(argv[0]);
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return 0;
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case 'f':
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__fpath = optarg;
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break;
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case 'n':
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__max = atol(optarg);
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break;
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case 'u':
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unuse = true;
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break;
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case 'o':
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action = optarg;
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break;
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default:
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break;
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}
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}
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int fd = open(__fpath.c_str(), O_RDWR | O_CREAT, 0600);
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if (fd == -1)
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{
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printf("open %s error\r\n", __fpath.c_str());
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return 1;
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}
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char* ptr = (char*) mmap(NULL, __max, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
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if (ptr == NULL)
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{
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printf("mmap error %s\r\n", acl::last_serror());
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return 1;
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}
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printf("file size: %ld\r\n", __max);
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lseek(fd, __max, SEEK_SET);
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write(fd, "x", 1);
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close(fd);
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char* ptr_saved = ptr;
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printf("action: %s\r\n", action.c_str());
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if (action == "get")
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{
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for (off_t i = 0; i < __max; i++)
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{
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ch = *ptr++;
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if (i % 9999999 == 0)
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printf("ch: %d, %c, i: %ld\n", ch, ch, i);
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}
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}
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else if (action == "set")
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{
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acl_pthread_t tid;
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acl_pthread_create(&tid, NULL, thread_main, ptr);
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for (off_t i = 0; i < __max; i++)
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{
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if (i % 100 == 0)
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*ptr = '\n';
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else
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*ptr = 'x';
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if (i % 9999999 == 0)
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printf("set: %c\r\n", *ptr);
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ptr++;
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}
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}
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else
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printf("unknown action: %s\r\n", action.c_str());
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if (unuse)
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munmap(ptr_saved, __max);
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sleep(100);
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return 0;
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}
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