--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/fontservices/textshaperplugin/IcuSource/common/utracimp.h Tue Feb 02 02:02:46 2010 +0200
@@ -0,0 +1,384 @@
+/*
+*******************************************************************************
+*
+* Copyright (C) 2003-2004, International Business Machines
+* Corporation and others. All Rights Reserved.
+*
+*******************************************************************************
+* file name: utracimp.h
+* encoding: US-ASCII
+* tab size: 8 (not used)
+* indentation:4
+*
+* created on: 2003aug06
+* created by: Markus W. Scherer
+*
+* Internal header for ICU tracing/logging.
+*
+*
+* Various notes:
+* - using a trace level variable to only call trace functions
+* when the level is sufficient
+* - using the same variable for tracing on/off to never make a function
+* call when off
+* - the function number is put into a local variable by the entry macro
+* and used implicitly to avoid copy&paste/typing mistakes by the developer
+* - the application must call utrace_setFunctions() and pass in
+* implementations for the trace functions
+* - ICU trace macros call ICU functions that route through the function
+* pointers if they have been set;
+* this avoids an indirection at the call site
+* (which would cost more code for another check and for the indirection)
+*
+* ### TODO Issues:
+* - Verify that va_list is portable among compilers for the same platform.
+* va_list should be portable because printf() would fail otherwise!
+* - Should enum values like UTraceLevel be passed into int32_t-type arguments,
+* or should enum types be used?
+*/
+
+#ifndef __UTRACIMP_H__
+#define __UTRACIMP_H__
+
+#include "unicode/utrace.h"
+#include <stdarg.h>
+
+U_CDECL_BEGIN
+
+/**
+ * \var utrace_level
+ * Trace level variable. Negative for "off".
+ * Use only via UTRACE_ macros.
+ * @internal
+ */
+#ifdef UTRACE_IMPL
+U_EXPORT int32_t
+#else
+U_CFUNC U_COMMON_API int32_t
+#endif
+utrace_level;
+
+
+/**
+ * Traced Function Exit return types.
+ * Flags indicating the number and types of varargs included in a call
+ * to a UTraceExit function.
+ * Bits 0-3: The function return type. First variable param.
+ * Bit 4: Flag for presence of U_ErrorCode status param.
+ * @internal
+ */
+typedef enum UTraceExitVal {
+ /** The traced function returns no value @internal */
+ UTRACE_EXITV_NONE = 0,
+ /** The traced function returns an int32_t, or compatible, type. @internal */
+ UTRACE_EXITV_I32 = 1,
+ /** The traced function returns a pointer @internal */
+ UTRACE_EXITV_PTR = 2,
+ /** The traced function returns a UBool @internal */
+ UTRACE_EXITV_BOOL = 3,
+ /** Mask to extract the return type values from a UTraceExitVal @internal */
+ UTRACE_EXITV_MASK = 0xf,
+ /** Bit indicating that the traced function includes a UErrorCode parameter @internal */
+ UTRACE_EXITV_STATUS = 0x10
+} UTraceExitVal;
+
+/**
+ * Trace function for the entry point of a function.
+ * Do not use directly, use UTRACE_ENTRY instead.
+ * @param fnNumber The UTraceFunctionNumber for the current function.
+ * @internal
+ */
+U_CAPI void U_EXPORT2
+utrace_entry(int32_t fnNumber);
+
+/**
+ * Trace function for each exit point of a function.
+ * Do not use directly, use UTRACE_EXIT* instead.
+ * @param fnNumber The UTraceFunctionNumber for the current function.
+ * @param returnType The type of the value returned by the function.
+ * @param errorCode The UErrorCode value at function exit. See UTRACE_EXIT.
+ * @internal
+ */
+U_CAPI void U_EXPORT2
+utrace_exit(int32_t fnNumber, int32_t returnType, ...);
+
+
+/**
+ * Trace function used inside functions that have a UTRACE_ENTRY() statement.
+ * Do not use directly, use UTRACE_DATAX() macros instead.
+ *
+ * @param utraceFnNumber The number of the current function, from the local
+ * variable of the same name.
+ * @param level The trace level for this message.
+ * @param fmt The trace format string.
+ *
+ * @internal
+ */
+U_CAPI void U_EXPORT2
+utrace_data(int32_t utraceFnNumber, int32_t level, const char *fmt, ...);
+
+U_CDECL_END
+
+#if U_ENABLE_TRACING
+
+/**
+ * Boolean expression to see if ICU tracing is turned on
+ * to at least the specified level.
+ * @internal
+ */
+#define UTRACE_LEVEL(level) (utrace_level>=(level))
+
+/**
+ * Flag bit in utraceFnNumber, the local variable added to each function
+ * with tracing code to contains the function number.
+ *
+ * Set the flag if the function's entry is traced, which will cause the
+ * function's exit to also be traced. utraceFnNumber is uncoditionally
+ * set at entry, whether or not the entry is traced, so that it will
+ * always be available for error trace output.
+ * @internal
+ */
+#define UTRACE_TRACED_ENTRY 0x80000000
+
+/**
+ * Trace statement for the entry point of a function.
+ * Stores the function number in a local variable.
+ * In C code, must be placed immediately after the last variable declaration.
+ * Must be matched with UTRACE_EXIT() at all function exit points.
+ *
+ * Tracing should start with UTRACE_ENTRY after checking for
+ * U_FAILURE at function entry, so that if a function returns immediately
+ * because of a pre-existing error condition, it does not show up in the trace,
+ * consistent with ICU's error handling model.
+ *
+ * @param fnNumber The UTraceFunctionNumber for the current function.
+ * @internal
+ */
+#define UTRACE_ENTRY(fnNumber) \
+ int32_t utraceFnNumber=(fnNumber); \
+ if(utrace_level>=UTRACE_INFO) { \
+ utrace_entry(fnNumber); \
+ utraceFnNumber |= UTRACE_TRACED_ENTRY; \
+ }
+
+
+/**
+ * Trace statement for the entry point of open and close functions.
+ * Produces trace output at a less verbose setting than plain UTRACE_ENTRY
+ * Stores the function number in a local variable.
+ * In C code, must be placed immediately after the last variable declaration.
+ * Must be matched with UTRACE_EXIT() at all function exit points.
+ *
+ * @param fnNumber The UTraceFunctionNumber for the current function.
+ * @internal
+ */
+#define UTRACE_ENTRY_OC(fnNumber) \
+ int32_t utraceFnNumber=(fnNumber); \
+ if(utrace_level>=UTRACE_OPEN_CLOSE) { \
+ utrace_entry(fnNumber); \
+ utraceFnNumber |= UTRACE_TRACED_ENTRY; \
+ }
+
+/**
+ * Trace statement for each exit point of a function that has a UTRACE_ENTRY()
+ * statement.
+ *
+ * @param errorCode The function's ICU UErrorCode value at function exit,
+ * or U_ZERO_ERROR if the function does not use a UErrorCode.
+ * 0==U_ZERO_ERROR indicates success,
+ * positive values an error (see u_errorName()),
+ * negative values an informational status.
+ *
+ * @internal
+ */
+#define UTRACE_EXIT() \
+ {if(utraceFnNumber & UTRACE_TRACED_ENTRY) { \
+ utrace_exit(utraceFnNumber & ~UTRACE_TRACED_ENTRY, UTRACE_EXITV_NONE); \
+ }}
+
+/**
+ * Trace statement for each exit point of a function that has a UTRACE_ENTRY()
+ * statement, and that returns a value.
+ *
+ * @param val The function's return value, int32_t or comatible type.
+ *
+ * @internal
+ */
+#define UTRACE_EXIT_VALUE(val) \
+ {if(utraceFnNumber & UTRACE_TRACED_ENTRY) { \
+ utrace_exit(utraceFnNumber & ~UTRACE_TRACED_ENTRY, UTRACE_EXITV_I32, val); \
+ }}
+
+#define UTRACE_EXIT_STATUS(status) \
+ {if(utraceFnNumber & UTRACE_TRACED_ENTRY) { \
+ utrace_exit(utraceFnNumber & ~UTRACE_TRACED_ENTRY, UTRACE_EXITV_STATUS, status); \
+ }}
+
+#define UTRACE_EXIT_VALUE_STATUS(val, status) \
+ {if(utraceFnNumber & UTRACE_TRACED_ENTRY) { \
+ utrace_exit(utraceFnNumber & ~UTRACE_TRACED_ENTRY, (UTRACE_EXITV_I32 | UTRACE_EXITV_STATUS), val, status); \
+ }}
+
+#define UTRACE_EXIT_PTR_STATUS(ptr, status) \
+ {if(utraceFnNumber & UTRACE_TRACED_ENTRY) { \
+ utrace_exit(utraceFnNumber & ~UTRACE_TRACED_ENTRY, (UTRACE_EXITV_PTR | UTRACE_EXITV_STATUS), ptr, status); \
+ }}
+
+/**
+ * Trace statement used inside functions that have a UTRACE_ENTRY() statement.
+ * Takes no data arguments.
+ * The number of arguments for this macro must match the number of inserts
+ * in the format string. Vector inserts count as two arguments.
+ * Calls utrace_data() if the level is high enough.
+ * @internal
+ */
+#define UTRACE_DATA0(level, fmt) \
+ if(UTRACE_LEVEL(level)) { \
+ utrace_data(utraceFnNumber & ~UTRACE_TRACED_ENTRY, (level), (fmt)); \
+ }
+
+/**
+ * Trace statement used inside functions that have a UTRACE_ENTRY() statement.
+ * Takes one data argument.
+ * The number of arguments for this macro must match the number of inserts
+ * in the format string. Vector inserts count as two arguments.
+ * Calls utrace_data() if the level is high enough.
+ * @internal
+ */
+#define UTRACE_DATA1(level, fmt, a) \
+ if(UTRACE_LEVEL(level)) { \
+ utrace_data(utraceFnNumber & ~UTRACE_TRACED_ENTRY , (level), (fmt), (a)); \
+ }
+
+/**
+ * Trace statement used inside functions that have a UTRACE_ENTRY() statement.
+ * Takes two data arguments.
+ * The number of arguments for this macro must match the number of inserts
+ * in the format string. Vector inserts count as two arguments.
+ * Calls utrace_data() if the level is high enough.
+ * @internal
+ */
+#define UTRACE_DATA2(level, fmt, a, b) \
+ if(UTRACE_LEVEL(level)) { \
+ utrace_data(utraceFnNumber & ~UTRACE_TRACED_ENTRY , (level), (fmt), (a), (b)); \
+ }
+
+/**
+ * Trace statement used inside functions that have a UTRACE_ENTRY() statement.
+ * Takes three data arguments.
+ * The number of arguments for this macro must match the number of inserts
+ * in the format string. Vector inserts count as two arguments.
+ * Calls utrace_data() if the level is high enough.
+ * @internal
+ */
+#define UTRACE_DATA3(level, fmt, a, b, c) \
+ if(UTRACE_LEVEL(level)) { \
+ utrace_data(utraceFnNumber & ~UTRACE_TRACED_ENTRY, (level), (fmt), (a), (b), (c)); \
+ }
+
+/**
+ * Trace statement used inside functions that have a UTRACE_ENTRY() statement.
+ * Takes four data arguments.
+ * The number of arguments for this macro must match the number of inserts
+ * in the format string. Vector inserts count as two arguments.
+ * Calls utrace_data() if the level is high enough.
+ * @internal
+ */
+#define UTRACE_DATA4(level, fmt, a, b, c, d) \
+ if(UTRACE_LEVEL(level)) { \
+ utrace_data(utraceFnNumber & ~UTRACE_TRACED_ENTRY, (level), (fmt), (a), (b), (c), (d)); \
+ }
+
+/**
+ * Trace statement used inside functions that have a UTRACE_ENTRY() statement.
+ * Takes five data arguments.
+ * The number of arguments for this macro must match the number of inserts
+ * in the format string. Vector inserts count as two arguments.
+ * Calls utrace_data() if the level is high enough.
+ * @internal
+ */
+#define UTRACE_DATA5(level, fmt, a, b, c, d, e) \
+ if(UTRACE_LEVEL(level)) { \
+ utrace_data(utraceFnNumber & ~UTRACE_TRACED_ENTRY, (level), (fmt), (a), (b), (c), (d), (e)); \
+ }
+
+/**
+ * Trace statement used inside functions that have a UTRACE_ENTRY() statement.
+ * Takes six data arguments.
+ * The number of arguments for this macro must match the number of inserts
+ * in the format string. Vector inserts count as two arguments.
+ * Calls utrace_data() if the level is high enough.
+ * @internal
+ */
+#define UTRACE_DATA6(level, fmt, a, b, c, d, e, f) \
+ if(UTRACE_LEVEL(level)) { \
+ utrace_data(utraceFnNumber & ~UTRACE_TRACED_ENTRY, (level), (fmt), (a), (b), (c), (d), (e), (f)); \
+ }
+
+/**
+ * Trace statement used inside functions that have a UTRACE_ENTRY() statement.
+ * Takes seven data arguments.
+ * The number of arguments for this macro must match the number of inserts
+ * in the format string. Vector inserts count as two arguments.
+ * Calls utrace_data() if the level is high enough.
+ * @internal
+ */
+#define UTRACE_DATA7(level, fmt, a, b, c, d, e, f, g) \
+ if(UTRACE_LEVEL(level)) { \
+ utrace_data(utraceFnNumber & ~UTRACE_TRACED_ENTRY, (level), (fmt), (a), (b), (c), (d), (e), (f), (g)); \
+ }
+
+/**
+ * Trace statement used inside functions that have a UTRACE_ENTRY() statement.
+ * Takes eight data arguments.
+ * The number of arguments for this macro must match the number of inserts
+ * in the format string. Vector inserts count as two arguments.
+ * Calls utrace_data() if the level is high enough.
+ * @internal
+ */
+#define UTRACE_DATA8(level, fmt, a, b, c, d, e, f, g, h) \
+ if(UTRACE_LEVEL(level)) { \
+ utrace_data(utraceFnNumber & ~UTRACE_TRACED_ENTRY, (level), (fmt), (a), (b), (c), (d), (e), (f), (g), (h)); \
+ }
+
+/**
+ * Trace statement used inside functions that have a UTRACE_ENTRY() statement.
+ * Takes nine data arguments.
+ * The number of arguments for this macro must match the number of inserts
+ * in the format string. Vector inserts count as two arguments.
+ * Calls utrace_data() if the level is high enough.
+ * @internal
+ */
+#define UTRACE_DATA9(level, fmt, a, b, c, d, e, f, g, h, i) \
+ if(UTRACE_LEVEL(level)) { \
+ utrace_data(utraceFnNumber & ~UTRACE_TRACED_ENTRY, (level), (fmt), (a), (b), (c), (d), (e), (f), (g), (h), (i)); \
+ }
+
+#else
+
+/*
+ * When tracing is disabled, the following macros become empty
+ */
+
+#define UTRACE_LEVEL(level) 0
+#define UTRACE_ENTRY(fnNumber)
+#define UTRACE_ENTRY_OC(fnNumber)
+#define UTRACE_EXIT()
+#define UTRACE_EXIT_VALUE(val)
+#define UTRACE_EXIT_STATUS(status)
+#define UTRACE_EXIT_VALUE_STATUS(val, status)
+#define UTRACE_EXIT_PTR_STATUS(ptr, status)
+#define UTRACE_DATA0(level, fmt)
+#define UTRACE_DATA1(level, fmt, a)
+#define UTRACE_DATA2(level, fmt, a, b)
+#define UTRACE_DATA3(level, fmt, a, b, c)
+#define UTRACE_DATA4(level, fmt, a, b, c, d)
+#define UTRACE_DATA5(level, fmt, a, b, c, d, e)
+#define UTRACE_DATA6(level, fmt, a, b, c, d, e, f)
+#define UTRACE_DATA7(level, fmt, a, b, c, d, e, f, g)
+#define UTRACE_DATA8(level, fmt, a, b, c, d, e, f, g, h)
+#define UTRACE_DATA9(level, fmt, a, b, c, d, e, f, g, h, i)
+
+#endif
+
+#endif