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| 1 /* | |
| 2 ** 2004 May 22 | |
| 3 ** | |
| 4 ** The author disclaims copyright to this source code. In place of | |
| 5 ** a legal notice, here is a blessing: | |
| 6 ** | |
| 7 ** May you do good and not evil. | |
| 8 ** May you find forgiveness for yourself and forgive others. | |
| 9 ** May you share freely, never taking more than you give. | |
| 10 ** | |
| 11 ****************************************************************************** | |
| 12 ** | |
| 13 ** This file contains macros and a little bit of code that is common to | |
| 14 ** all of the platform-specific files (os_*.c) and is #included into those | |
| 15 ** files. | |
| 16 ** | |
| 17 ** This file should be #included by the os_*.c files only. It is not a | |
| 18 ** general purpose header file. | |
| 19 */ | |
| 20 #ifndef _OS_COMMON_H_ | |
| 21 #define _OS_COMMON_H_ | |
| 22 | |
| 23 /* | |
| 24 ** At least two bugs have slipped in because we changed the MEMORY_DEBUG | |
| 25 ** macro to SQLITE_DEBUG and some older makefiles have not yet made the | |
| 26 ** switch. The following code should catch this problem at compile-time. | |
| 27 */ | |
| 28 #ifdef MEMORY_DEBUG | |
| 29 # error "The MEMORY_DEBUG macro is obsolete. Use SQLITE_DEBUG instead." | |
| 30 #endif | |
| 31 | |
| 32 #if defined(SQLITE_TEST) && defined(SQLITE_DEBUG) | |
| 33 # ifndef SQLITE_DEBUG_OS_TRACE | |
| 34 # define SQLITE_DEBUG_OS_TRACE 0 | |
| 35 # endif | |
| 36 int sqlite3OSTrace = SQLITE_DEBUG_OS_TRACE; | |
| 37 # define OSTRACE(X) if( sqlite3OSTrace ) sqlite3DebugPrintf X | |
| 38 #else | |
| 39 # define OSTRACE(X) | |
| 40 #endif | |
| 41 | |
| 42 /* | |
| 43 ** Macros for performance tracing. Normally turned off. Only works | |
| 44 ** on i486 hardware. | |
| 45 */ | |
| 46 #ifdef SQLITE_PERFORMANCE_TRACE | |
| 47 | |
| 48 /* | |
| 49 ** hwtime.h contains inline assembler code for implementing | |
| 50 ** high-performance timing routines. | |
| 51 */ | |
| 52 #include "hwtime.h" | |
| 53 | |
| 54 static sqlite_uint64 g_start; | |
| 55 static sqlite_uint64 g_elapsed; | |
| 56 #define TIMER_START g_start=sqlite3Hwtime() | |
| 57 #define TIMER_END g_elapsed=sqlite3Hwtime()-g_start | |
| 58 #define TIMER_ELAPSED g_elapsed | |
| 59 #else | |
| 60 #define TIMER_START | |
| 61 #define TIMER_END | |
| 62 #define TIMER_ELAPSED ((sqlite_uint64)0) | |
| 63 #endif | |
| 64 | |
| 65 /* | |
| 66 ** If we compile with the SQLITE_TEST macro set, then the following block | |
| 67 ** of code will give us the ability to simulate a disk I/O error. This | |
| 68 ** is used for testing the I/O recovery logic. | |
| 69 */ | |
| 70 #ifdef SQLITE_TEST | |
| 71 int sqlite3_io_error_hit = 0; /* Total number of I/O Errors */ | |
| 72 int sqlite3_io_error_hardhit = 0; /* Number of non-benign errors */ | |
| 73 int sqlite3_io_error_pending = 0; /* Count down to first I/O error */ | |
| 74 int sqlite3_io_error_persist = 0; /* True if I/O errors persist */ | |
| 75 int sqlite3_io_error_benign = 0; /* True if errors are benign */ | |
| 76 int sqlite3_diskfull_pending = 0; | |
| 77 int sqlite3_diskfull = 0; | |
| 78 #define SimulateIOErrorBenign(X) sqlite3_io_error_benign=(X) | |
| 79 #define SimulateIOError(CODE) \ | |
| 80 if( (sqlite3_io_error_persist && sqlite3_io_error_hit) \ | |
| 81 || sqlite3_io_error_pending-- == 1 ) \ | |
| 82 { local_ioerr(); CODE; } | |
| 83 static void local_ioerr(){ | |
| 84 IOTRACE(("IOERR\n")); | |
| 85 sqlite3_io_error_hit++; | |
| 86 if( !sqlite3_io_error_benign ) sqlite3_io_error_hardhit++; | |
| 87 } | |
| 88 #define SimulateDiskfullError(CODE) \ | |
| 89 if( sqlite3_diskfull_pending ){ \ | |
| 90 if( sqlite3_diskfull_pending == 1 ){ \ | |
| 91 local_ioerr(); \ | |
| 92 sqlite3_diskfull = 1; \ | |
| 93 sqlite3_io_error_hit = 1; \ | |
| 94 CODE; \ | |
| 95 }else{ \ | |
| 96 sqlite3_diskfull_pending--; \ | |
| 97 } \ | |
| 98 } | |
| 99 #else | |
| 100 #define SimulateIOErrorBenign(X) | |
| 101 #define SimulateIOError(A) | |
| 102 #define SimulateDiskfullError(A) | |
| 103 #endif | |
| 104 | |
| 105 /* | |
| 106 ** When testing, keep a count of the number of open files. | |
| 107 */ | |
| 108 #ifdef SQLITE_TEST | |
| 109 int sqlite3_open_file_count = 0; | |
| 110 #define OpenCounter(X) sqlite3_open_file_count+=(X) | |
| 111 #else | |
| 112 #define OpenCounter(X) | |
| 113 #endif | |
| 114 | |
| 115 #endif /* !defined(_OS_COMMON_H_) */ | |
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Chromium Code Reviews
Issue 2363173002:
[sqlite] Remove obsolete reference version 3.8.7.4. (Closed)
