ICU-461.18.tar.gz

[apple/icu.git] / icuSources / common / putilimp.h

diff --git a/icuSources/common/putilimp.h b/icuSources/common/putilimp.h
index 04c91b3903247e3cb113ae3c30945702da5dd65b..93de6a0128b497f1312e509401ebc49de981a2e9 100644 (file)
--- a/icuSources/common/putilimp.h
+++ b/icuSources/common/putilimp.h
@@ -1,7 +1,7 @@
 /*
 ******************************************************************************
 *
-*   Copyright (C) 1997-2006, International Business Machines
+*   Copyright (C) 1997-2010, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *
 ******************************************************************************
@@ -163,9 +163,9 @@ U_INTERNAL double  U_EXPORT2 uprv_round(double x);
  * Time zone utilities
  *
  * Wrappers for C runtime library functions relating to timezones.
- * The t_tzset() function (similar to tzset) uses the current setting 
- * of the environment variable TZ to assign values to three global 
- * variables: daylight, timezone, and tzname. These variables have the 
+ * The t_tzset() function (similar to tzset) uses the current setting
+ * of the environment variable TZ to assign values to three global
+ * variables: daylight, timezone, and tzname. These variables have the
  * following meanings, and are declared in <time.h>.
  *
  *   daylight   Nonzero if daylight-saving-time zone (DST) is specified
@@ -213,11 +213,21 @@ U_INTERNAL const char* U_EXPORT2 uprv_tzname(int n);
 
 /**
  * Get UTC (GMT) time measured in milliseconds since 0:00 on 1/1/1970.
- * @return the UTC time measured in milliseconds 
+ * This function is affected by 'faketime' and should be the bottleneck for all user-visible ICU time functions.
+ * @return the UTC time measured in milliseconds
  * @internal
  */
 U_INTERNAL UDate U_EXPORT2 uprv_getUTCtime(void);
 
+/**
+ * Get UTC (GMT) time measured in milliseconds since 0:00 on 1/1/1970.
+ * This function is not affected by 'faketime', so it should only be used by low level test functions- not by anything that
+ * exposes time to the end user.
+ * @return the UTC time measured in milliseconds
+ * @internal
+ */
+U_INTERNAL UDate U_EXPORT2 uprv_getRawUTCtime(void);
+
 /**
  * Determine whether a pathname is absolute or not, as defined by the platform.
  * @param path Pathname to test
@@ -226,6 +236,14 @@ U_INTERNAL UDate U_EXPORT2 uprv_getUTCtime(void);
  */
 U_INTERNAL UBool U_EXPORT2 uprv_pathIsAbsolute(const char *path);
 
+/**
+ * Use U_MAX_PTR instead of this function.
+ * @param void pointer to test
+ * @return the largest possible pointer greater than the base
+ * @internal (ICU 3.8)
+ */
+U_INTERNAL void * U_EXPORT2 uprv_maximumPtr(void *base);
+
 /**
  * Maximum value of a (void*) - use to indicate the limit of an 'infinite' buffer.
  * In fact, buffer sizes must not exceed 2GB so that the difference between
@@ -245,26 +263,14 @@ U_INTERNAL UBool U_EXPORT2 uprv_pathIsAbsolute(const char *path);
     /* We have 31-bit pointers. */
 #    define U_MAX_PTR(base) ((void *)0x7fffffff)
 #  elif defined(OS400)
-/*
- * With the provided macro we should never be out of range of a given segment
- * (a traditional/typical segment that is).  Our segments have 5 bytes for the
- * id and 3 bytes for the offset.  The key is that the casting takes care of
- * only retrieving the offset portion minus x1000.  Hence, the smallest offset
- * seen in a program is x001000 and when casted to an int would be 0.
- * That's why we can only add 0xffefff.  Otherwise, we would exceed the segment.
- *
- * Currently, 16MB is the current addressing limitation on as/400.  This macro
- * may eventually be changed to use 2GB addressability for the newer version of
- * as/400 machines.
- */
-#    define U_MAX_PTR(base) ((void *)(((char *)base)-((int32_t)(base))+((int32_t)0xffefff)))
+#    define U_MAX_PTR(base) uprv_maximumPtr((void *)base)
 #  elif defined(__GNUC__) && __GNUC__ >= 4
 /*
  * Due to a compiler optimization bug, gcc 4 causes test failures when doing
  * this math arithmetic on pointers on some platforms. It seems like the
  * pointers are considered signed instead of unsigned. The uintptr_t type
  * isn't available on all platforms (i.e MSVC 6) and pointers aren't always
- * a scalar value (i.e. i5/OS in the lines above).
+ * a scalar value (i.e. i5/OS see uprv_maximumPtr function).
  */
 #    define U_MAX_PTR(base) \
     ((void *)(((uintptr_t)(base)+0x7fffffffu) > (uintptr_t)(base) \
@@ -278,4 +284,27 @@ U_INTERNAL UBool U_EXPORT2 uprv_pathIsAbsolute(const char *path);
 #  endif
 #endif
 
+#if U_ENABLE_DYLOAD
+/*  Dynamic Library Functions */
+
+/**
+ * Load a library
+ * @internal (ICU 4.4)
+ */
+U_INTERNAL void * U_EXPORT2 uprv_dl_open(const char *libName, UErrorCode *status);
+
+/**
+ * Close a library
+ * @internal (ICU 4.4)
+ */
+U_INTERNAL void U_EXPORT2 uprv_dl_close( void *lib, UErrorCode *status);
+
+/**
+ * Extract a symbol from a library
+ * @internal (ICU 4.4)
+ */
+U_INTERNAL void * U_EXPORT2 uprv_dl_sym( void *lib, const char *symbolName, UErrorCode *status);
+
+#endif
+
 #endif