hfs-366.1.1.tar.gz

[apple/hfs.git] / hfs-alloc-trace / hfs-alloc-trace.c

diff --git a/hfs-alloc-trace/hfs-alloc-trace.c b/hfs-alloc-trace/hfs-alloc-trace.c
new file mode 100644 (file)
index 0000000..0c171b7
--- /dev/null
+++ b/hfs-alloc-trace/hfs-alloc-trace.c
@@ -0,0 +1,38 @@
+//
+//  hfs-alloc-trace.c
+//  hfs-alloc-trace
+//
+//  Created by Chris Suter on 8/19/15.
+//
+//
+
+#include <sys/sysctl.h>
+#include <stdlib.h>
+#include <err.h>
+#include <stdio.h>
+#include <stdbool.h>
+
+#include "../core/hfs_alloc_trace.h"
+
+int main(void)
+{
+    size_t sz = 128 * 1024;
+    struct hfs_alloc_trace_info *info = malloc(sz);
+
+    if (sysctlbyname("vfs.generic.hfs.alloc_trace_info", info, &sz,
+                     NULL, 0)) {
+        err(1, "sysctlbyname failed");
+    }
+
+    for (int i = 0; i < info->entry_count; ++i) {
+        printf(" -- 0x%llx:%llu <%llu> --\n", info->entries[i].ptr,
+               info->entries[i].sequence, info->entries[i].size);
+        for (int j = 0; j < HFS_ALLOC_BACKTRACE_LEN; ++j)
+            printf("0x%llx\n", info->entries[i].backtrace[j]);
+    }
+
+    if (info->more)
+        printf("[skipped]\n");
+
+    return 0;
+}