Subject: Re: patch to make strace printfs available to C code
From: Joe Buehler <[email-masked]>
To: [email-masked]
Date: Mon, 08 Jul 2002 14:16:39 -0400
Newsgroups: gmane.os.cygwin

I forgot the attachment, here it is.

Joe Buehler
--- src/winsup/cygwin/include/sys/strace.h	2002-06-10 15:58:21.000000000 -0400
+++ src/winsup/cygwin/include/sys/strace.h	2002-06-25 14:05:34.000000000 -0400
@@ -78,6 +78,7 @@
 #define _STRACE_MALLOC	 0x20000 // trace malloc calls
 #define _STRACE_THREAD	 0x40000 // thread-locking calls
 #define _STRACE_NOTALL	 0x80000 // don't include if _STRACE_ALL
+
 #if defined (DEBUGGING)
 # define _STRACE_ON strace.active = 1;
 # define _STRACE_OFF strace.active = 0;
@@ -92,29 +93,37 @@
 
 void small_printf (const char *, ...);
 void strace_printf (unsigned, const char *func, const char *, ...);
+int strace_active();
 
 #ifdef __cplusplus
 }
 #endif
 
 #ifdef __cplusplus
-
-#ifdef NOSTRACE
-#define define_strace(c, f)
-#define define_strace1(c, f)
+#define STRACE_PRINTF strace.prntf
+#define STRACE_ACTIVE strace.active
 #else
+#define STRACE_PRINTF strace_printf
+#define STRACE_ACTIVE strace_active()
+#endif /* __cplusplus */
+
 #ifdef NEW_MACRO_VARARGS
 /* Output message to strace log */
 
 #define define_strace0(c,...) \
   do { \
-      if ((c & _STRACE_SYSTEM) || strace.active) \
-	strace.prntf (c, __PRETTY_FUNCTION__, __VA_ARGS__); \
+      if ((c & _STRACE_SYSTEM) || STRACE_ACTIVE) \
+	STRACE_PRINTF (c, __PRETTY_FUNCTION__, __VA_ARGS__); \
     } \
   while (0)
 
+#ifdef NOSTRACE
+#define define_strace(c, f)
+#define define_strace1(c, f)
+#else
 #define define_strace(c, ...) define_strace0 (_STRACE_ ## c, __VA_ARGS__)
 #define define_strace1(c, ...) define_strace0 ((_STRACE_ ## c | _STRACE_NOTALL), __VA_ARGS__)
+#endif
 
 #define debug_printf(...)	define_strace (DEBUG, __VA_ARGS__)
 #define paranoid_printf(...)	define_strace (PARANOID, __VA_ARGS__)
@@ -127,19 +136,26 @@
 #define minimal_printf(...)	define_strace1 (MINIMAL, __VA_ARGS__)
 #define malloc_printf(...)	define_strace1 (MALLOC, __VA_ARGS__)
 #define thread_printf(...)	define_strace1 (THREAD, __VA_ARGS__)
+
+#else /*NEW_MACRO_VARARGS*/
+
+#ifdef NOSTRACE
+#define strace_printf_wrap(what, fmt, args...)
+#define strace_printf_wrap1(what, fmt, args...)
 #else
 #define strace_printf_wrap(what, fmt, args...) \
    ((void) ({\
-	if ((_STRACE_ ## what & _STRACE_SYSTEM) || strace.active) \
-	  strace.prntf(_STRACE_ ## what, __PRETTY_FUNCTION__, fmt, ## args); \
+	if ((_STRACE_ ## what & _STRACE_SYSTEM) || STRACE_ACTIVE) \
+	  STRACE_PRINTF(_STRACE_ ## what, __PRETTY_FUNCTION__, fmt, ## args); \
 	0; \
     }))
 #define strace_printf_wrap1(what, fmt, args...) \
     ((void) ({\
-	if ((_STRACE_ ## what & _STRACE_SYSTEM) || strace.active) \
-	  strace.prntf((_STRACE_ ## what) | _STRACE_NOTALL, __PRETTY_FUNCTION__, fmt, ## args); \
+	if ((_STRACE_ ## what & _STRACE_SYSTEM) || STRACE_ACTIVE) \
+	  STRACE_PRINTF((_STRACE_ ## what) | _STRACE_NOTALL, __PRETTY_FUNCTION__, fmt, ## args); \
 	0; \
     }))
+#end
 
 #define debug_printf(fmt, args...) strace_printf_wrap(DEBUG, fmt , ## args)
 #define paranoid_printf(fmt, args...) strace_printf_wrap(PARANOID, fmt , ## args)
@@ -152,7 +168,7 @@
 #define minimal_printf(fmt, args...) strace_printf_wrap1(MINIMAL, fmt , ## args)
 #define malloc_printf(fmt, args...) strace_printf_wrap1(MALLOC, fmt , ## args)
 #define thread_printf(fmt, args...) strace_printf_wrap1(THREAD, fmt , ## args)
+
 #endif /*NEW_MACRO_VARARGS*/
-#endif /*NOSTRACE*/
-#endif /* __cplusplus */
+
 #endif /* _SYS_STRACE_H */
--- src/winsup/cygwin/strace.cc	2002-06-19 11:27:25.000000000 -0400
+++ src/winsup/cygwin/strace.cc	2002-06-25 14:04:16.000000000 -0400
@@ -234,6 +234,12 @@
     }
 }
 
+extern "C" int
+strace_active()
+{
+  return strace.active;
+}
+
 static NO_COPY struct tab
 {
   int v;

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