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Overview
Comment: | Add new extension "bgckpt" in ext/misc/bgckpt.c. For experimenting with running wal2 mode checkpoints in a background thread. |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | wal2 |
Files: | files | file ages | folders |
SHA3-256: |
63955442304052f5adddd05ccaeebe87 |
User & Date: | dan 2017-10-10 20:11:10.809 |
Context
2018-12-01
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20:14 | Sync this branch with the latest trunk. (check-in: 7a44fa5a35 user: dan tags: wal2) | |
2017-10-10
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20:11 | Add new extension "bgckpt" in ext/misc/bgckpt.c. For experimenting with running wal2 mode checkpoints in a background thread. (check-in: 6395544230 user: dan tags: wal2) | |
2017-10-09
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19:50 | Merge latest trunk changes with this branch. (check-in: d218d815f8 user: dan tags: wal2) | |
Changes
Added ext/misc/bgckpt.c.
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 | /* ** 2017-10-11 ** ** The author disclaims copyright to this source code. In place of ** a legal notice, here is a blessing: ** ** May you do good and not evil. ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ****************************************************************************** ** */ #if !defined(SQLITE_TEST) || defined(SQLITE_OS_UNIX) #include "sqlite3.h" #include <string.h> #include <pthread.h> /* ** API declarations. */ typedef struct Checkpointer Checkpointer; int sqlite3_bgckpt_create(const char *zFilename, Checkpointer **pp); int sqlite3_bgckpt_checkpoint(Checkpointer *p, int bBlock); void sqlite3_bgckpt_destroy(Checkpointer *p); struct Checkpointer { sqlite3 *db; /* Database handle */ pthread_t thread; /* Background thread */ pthread_mutex_t mutex; pthread_cond_t cond; int rc; /* Error from "PRAGMA wal_checkpoint" */ int bCkpt; /* True if checkpoint requested */ int bExit; /* True if exit requested */ }; static void *bgckptThreadMain(void *pCtx){ int rc = SQLITE_OK; Checkpointer *p = (Checkpointer*)pCtx; while( rc==SQLITE_OK ){ int bExit; pthread_mutex_lock(&p->mutex); if( p->bCkpt==0 && p->bExit==0 ){ pthread_cond_wait(&p->cond, &p->mutex); } p->bCkpt = 0; bExit = p->bExit; pthread_mutex_unlock(&p->mutex); if( bExit ) break; rc = sqlite3_exec(p->db, "PRAGMA wal_checkpoint", 0, 0, 0); if( rc==SQLITE_BUSY ){ rc = SQLITE_OK; } } pthread_mutex_lock(&p->mutex); p->rc = rc; pthread_mutex_unlock(&p->mutex); return 0; } void sqlite3_bgckpt_destroy(Checkpointer *p){ if( p ){ void *ret = 0; /* Signal the background thread to exit */ pthread_mutex_lock(&p->mutex); p->bExit = 1; pthread_cond_broadcast(&p->cond); pthread_mutex_unlock(&p->mutex); pthread_join(p->thread, &ret); sqlite3_close(p->db); sqlite3_free(p); } } int sqlite3_bgckpt_create(const char *zFilename, Checkpointer **pp){ Checkpointer *pNew = 0; int rc; pNew = (Checkpointer*)sqlite3_malloc(sizeof(Checkpointer)); if( pNew==0 ){ rc = SQLITE_NOMEM; }else{ memset(pNew, 0, sizeof(Checkpointer)); rc = sqlite3_open(zFilename, &pNew->db); } if( rc==SQLITE_OK ){ pthread_mutex_init(&pNew->mutex, 0); pthread_cond_init(&pNew->cond, 0); pthread_create(&pNew->thread, 0, bgckptThreadMain, (void*)pNew); } if( rc!=SQLITE_OK ){ sqlite3_bgckpt_destroy(pNew); pNew = 0; } *pp = pNew; return rc; } int sqlite3_bgckpt_checkpoint(Checkpointer *p, int bBlock){ int rc; pthread_mutex_lock(&p->mutex); rc = p->rc; if( rc==SQLITE_OK ){ p->bCkpt = 1; pthread_cond_broadcast(&p->cond); } pthread_mutex_unlock(&p->mutex); return rc; } #ifdef SQLITE_TEST #if defined(INCLUDE_SQLITE_TCL_H) # include "sqlite_tcl.h" #else # include "tcl.h" # ifndef SQLITE_TCLAPI # define SQLITE_TCLAPI # endif #endif const char *sqlite3ErrName(int rc); static void SQLITE_TCLAPI bgckpt_del(void * clientData){ Checkpointer *pCkpt = (Checkpointer*)clientData; sqlite3_bgckpt_destroy(pCkpt); } /* ** Tclcmd: $ckpt SUBCMD ... */ static int SQLITE_TCLAPI bgckpt_obj_cmd( void * clientData, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[] ){ Checkpointer *pCkpt = (Checkpointer*)clientData; const char *aCmd[] = { "checkpoint", "destroy", 0 }; int iCmd; if( objc<2 ){ Tcl_WrongNumArgs(interp, 1, objv, "SUBCMD ..."); return TCL_ERROR; } if( Tcl_GetIndexFromObj(interp, objv[1], aCmd, "sub-command", 0, &iCmd) ){ return TCL_ERROR; } switch( iCmd ){ case 0: { int rc; int bBlock = 0; if( objc>3 ){ Tcl_WrongNumArgs(interp, 2, objv, "?BLOCKING?"); return TCL_ERROR; } if( objc==3 && Tcl_GetBooleanFromObj(interp, objv[2], &bBlock) ){ return TCL_ERROR; } rc = sqlite3_bgckpt_checkpoint(pCkpt, bBlock); if( rc!=SQLITE_OK ){ Tcl_SetObjResult(interp, Tcl_NewStringObj(sqlite3ErrName(rc), -1)); return TCL_ERROR; } break; } case 1: { Tcl_DeleteCommand(interp, Tcl_GetString(objv[0])); break; } } return TCL_OK; } /* ** Tclcmd: bgckpt CMDNAME FILENAME */ static int SQLITE_TCLAPI bgckpt_cmd( void * clientData, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[] ){ const char *zCmd; const char *zFilename; int rc; Checkpointer *pCkpt; if( objc!=3 ){ Tcl_WrongNumArgs(interp, 1, objv, "CMDNAME FILENAME"); return TCL_ERROR; } zCmd = Tcl_GetString(objv[1]); zFilename = Tcl_GetString(objv[2]); rc = sqlite3_bgckpt_create(zFilename, &pCkpt); if( rc!=SQLITE_OK ){ Tcl_SetObjResult(interp, Tcl_NewStringObj(sqlite3ErrName(rc), -1)); return TCL_ERROR; } Tcl_CreateObjCommand(interp, zCmd, bgckpt_obj_cmd, (void*)pCkpt, bgckpt_del); Tcl_SetObjResult(interp, objv[1]); return TCL_OK; } int Bgckpt_Init(Tcl_Interp *interp){ Tcl_CreateObjCommand(interp, "bgckpt", bgckpt_cmd, 0, 0); return TCL_OK; } #endif /* SQLITE_TEST */ #else int Bgckpt_Init(Tcl_Interp *interp){ return TCL_OK; } #endif |
Changes to main.mk.
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323 324 325 326 327 328 329 330 331 332 333 334 335 336 | $(TOP)/src/test_windirent.c \ $(TOP)/src/test_wsd.c # Extensions to be statically loaded. # TESTSRC += \ $(TOP)/ext/misc/amatch.c \ $(TOP)/ext/misc/carray.c \ $(TOP)/ext/misc/closure.c \ $(TOP)/ext/misc/csv.c \ $(TOP)/ext/misc/eval.c \ $(TOP)/ext/misc/fileio.c \ $(TOP)/ext/misc/fuzzer.c \ $(TOP)/ext/misc/ieee754.c \ | > | 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 | $(TOP)/src/test_windirent.c \ $(TOP)/src/test_wsd.c # Extensions to be statically loaded. # TESTSRC += \ $(TOP)/ext/misc/amatch.c \ $(TOP)/ext/misc/bgckpt.c \ $(TOP)/ext/misc/carray.c \ $(TOP)/ext/misc/closure.c \ $(TOP)/ext/misc/csv.c \ $(TOP)/ext/misc/eval.c \ $(TOP)/ext/misc/fileio.c \ $(TOP)/ext/misc/fuzzer.c \ $(TOP)/ext/misc/ieee754.c \ |
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Changes to src/tclsqlite.c.
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4179 4180 4181 4182 4183 4184 4185 4186 4187 4188 4189 4190 4191 4192 | extern int SqlitetestSyscall_Init(Tcl_Interp*); #if defined(SQLITE_ENABLE_SESSION) && defined(SQLITE_ENABLE_PREUPDATE_HOOK) extern int TestSession_Init(Tcl_Interp*); #endif extern int Fts5tcl_Init(Tcl_Interp *); extern int SqliteRbu_Init(Tcl_Interp*); extern int Sqlitetesttcl_Init(Tcl_Interp*); #if defined(SQLITE_ENABLE_FTS3) || defined(SQLITE_ENABLE_FTS4) extern int Sqlitetestfts3_Init(Tcl_Interp *interp); #endif #ifdef SQLITE_ENABLE_ZIPVFS extern int Zipvfs_Init(Tcl_Interp*); Zipvfs_Init(interp); | > | 4179 4180 4181 4182 4183 4184 4185 4186 4187 4188 4189 4190 4191 4192 4193 | extern int SqlitetestSyscall_Init(Tcl_Interp*); #if defined(SQLITE_ENABLE_SESSION) && defined(SQLITE_ENABLE_PREUPDATE_HOOK) extern int TestSession_Init(Tcl_Interp*); #endif extern int Fts5tcl_Init(Tcl_Interp *); extern int SqliteRbu_Init(Tcl_Interp*); extern int Sqlitetesttcl_Init(Tcl_Interp*); extern int Bgckpt_Init(Tcl_Interp*); #if defined(SQLITE_ENABLE_FTS3) || defined(SQLITE_ENABLE_FTS4) extern int Sqlitetestfts3_Init(Tcl_Interp *interp); #endif #ifdef SQLITE_ENABLE_ZIPVFS extern int Zipvfs_Init(Tcl_Interp*); Zipvfs_Init(interp); |
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4227 4228 4229 4230 4231 4232 4233 4234 4235 4236 4237 4238 4239 4240 | SqlitetestSyscall_Init(interp); #if defined(SQLITE_ENABLE_SESSION) && defined(SQLITE_ENABLE_PREUPDATE_HOOK) TestSession_Init(interp); #endif Fts5tcl_Init(interp); SqliteRbu_Init(interp); Sqlitetesttcl_Init(interp); #if defined(SQLITE_ENABLE_FTS3) || defined(SQLITE_ENABLE_FTS4) Sqlitetestfts3_Init(interp); #endif Tcl_CreateObjCommand( interp, "load_testfixture_extensions", init_all_cmd, 0, 0 | > | 4228 4229 4230 4231 4232 4233 4234 4235 4236 4237 4238 4239 4240 4241 4242 | SqlitetestSyscall_Init(interp); #if defined(SQLITE_ENABLE_SESSION) && defined(SQLITE_ENABLE_PREUPDATE_HOOK) TestSession_Init(interp); #endif Fts5tcl_Init(interp); SqliteRbu_Init(interp); Sqlitetesttcl_Init(interp); Bgckpt_Init(interp); #if defined(SQLITE_ENABLE_FTS3) || defined(SQLITE_ENABLE_FTS4) Sqlitetestfts3_Init(interp); #endif Tcl_CreateObjCommand( interp, "load_testfixture_extensions", init_all_cmd, 0, 0 |
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