Initial commit

testcase/hptest.c

@@ -0,0 +1,62 @@
+#include "../user/monitor_user.h"
+#include <fcntl.h>
+#include <stdio.h>
+#include <sys/mman.h>
+#include <unistd.h>
+
+#define HUGEPAGE_SIZE (1024 * 1024 * 1024)  // Huge Page 大小为 1GB
+
+int main() {
+    int fd;
+    void *addr;
+    watch_arg w_arg = {0};
+
+    // 打开一个 hugetlbfs 文件
+    fd = open("/run/mrzcpd/huge_pages/hugepagefile", O_CREAT | O_RDWR, 0755);
+    if (fd < 0) {
+        perror("open");
+        return 1;
+    }
+
+    // 映射 Huge Page 内存
+    addr = mmap(0, HUGEPAGE_SIZE, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
+    if (addr == MAP_FAILED) {
+        perror("mmap");
+        close(fd);
+        return 1;
+    }
+
+    // 大页内存 int 类型变量, for ++ 
+    int *p = (int *)addr;
+    *p = 0;
+
+    w_arg = (watch_arg){
+        .task_id = getpid(),
+        .ptr = p,
+        .name = "hptest",
+        .length_byte = sizeof(int),
+        .threshold = 20,
+        .unsigned_flag = 0,
+        .greater_flag = 1,
+        .time_ns = 2000, // on hyper-v, 1us will block all system. 2us just fine, maybe 1us is too short for hyper-v
+    };
+    start_watch(w_arg);
+
+    for (int i = 0; i < 100; i++)
+    {
+        (*p)++;
+        printf("p = %d\n", *p);
+        sleep(1);
+    }
+
+    // 释放 Huge Page 内存
+    if (munmap(addr, HUGEPAGE_SIZE) == -1) {
+        perror("munmap");
+        close(fd);
+        return 1;
+    }
+
+    close(fd);
+
+    return 0;
+}