X-Git-Url: https://pd.if.org/git/?p=nbds;a=blobdiff_plain;f=runtime%2Flwt.c;h=42e79bff9ae89651447e05490e0dca5572af409a;hp=d7b9862d360284750df0a4d47518750958d1fc56;hb=9ec5405d406696c6cbdb7a47ade7fccc736a8b53;hpb=efd90a1b8a9d3bbb1bdd8e6ae41b3462e7193fb2

diff --git a/runtime/lwt.c b/runtime/lwt.c
index d7b9862..42e79bf 100644
--- a/runtime/lwt.c
+++ b/runtime/lwt.c
@@ -11,6 +11,22 @@
 #include "lwt.h"
 #include "mem.h"
 
+#define LWT_BUFFER_SCALE 16
+#define LWT_BUFFER_SIZE (1 << LWT_BUFFER_SCALE)
+#define LWT_BUFFER_MASK (LWT_BUFFER_SIZE - 1)
+
+typedef struct lwt_record {
+    uint64_t timestamp;
+    const char *format;
+    size_t value1;
+    size_t value2;
+} lwt_record_t;
+
+typedef struct lwt_buffer {
+    uint32_t head;
+    lwt_record_t x[0];
+} lwt_buffer_t;
+
 DECLARE_THREAD_LOCAL(tb_, int);
 
 lwt_buffer_t *lwt_buf_[MAX_NUM_THREADS] = {};
@@ -109,3 +125,14 @@ void lwt_dump (const char *file_name)
         fclose(file);
     }
 }
+
+void lwt_trace_i (const char *format, size_t value1, size_t value2) {
+    LOCALIZE_THREAD_LOCAL(tb_, lwt_buffer_t *);
+    if (tb_) {
+        unsigned int u, l;
+        __asm__ __volatile__("rdtsc" : "=a" (l), "=d" (u)); 
+        uint64_t timestamp = ((uint64_t)u << 32) | l; 
+        lwt_record_t temp = { timestamp, format, value1, value2 };
+        tb_->x[tb_->head++ & LWT_BUFFER_MASK] = temp;
+    }
+}