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Diffstat (limited to 'src/third_party/wiredtiger/ext/compressors/zlib/zlib_compress.c')
-rw-r--r--src/third_party/wiredtiger/ext/compressors/zlib/zlib_compress.c348
1 files changed, 167 insertions, 181 deletions
diff --git a/src/third_party/wiredtiger/ext/compressors/zlib/zlib_compress.c b/src/third_party/wiredtiger/ext/compressors/zlib/zlib_compress.c
index fb686a9f00c..461128a0faa 100644
--- a/src/third_party/wiredtiger/ext/compressors/zlib/zlib_compress.c
+++ b/src/third_party/wiredtiger/ext/compressors/zlib/zlib_compress.c
@@ -33,9 +33,8 @@
#include <string.h>
/*
- * We need to include the configuration file to detect whether this extension
- * is being built into the WiredTiger library; application-loaded compression
- * functions won't need it.
+ * We need to include the configuration file to detect whether this extension is being built into
+ * the WiredTiger library; application-loaded compression functions won't need it.
*/
#include <wiredtiger_config.h>
@@ -43,287 +42,274 @@
#include <wiredtiger_ext.h>
#ifdef _MSC_VER
-#define inline __inline
+#define inline __inline
#endif
/* Local compressor structure. */
typedef struct {
- WT_COMPRESSOR compressor; /* Must come first */
+ WT_COMPRESSOR compressor; /* Must come first */
- WT_EXTENSION_API *wt_api; /* Extension API */
+ WT_EXTENSION_API *wt_api; /* Extension API */
- int zlib_level; /* Configuration */
+ int zlib_level; /* Configuration */
} ZLIB_COMPRESSOR;
/*
- * zlib gives us a cookie to pass to the underlying allocation functions; we
- * need two handles, package them up.
+ * zlib gives us a cookie to pass to the underlying allocation functions; we need two handles,
+ * package them up.
*/
typedef struct {
- WT_COMPRESSOR *compressor;
- WT_SESSION *session;
+ WT_COMPRESSOR *compressor;
+ WT_SESSION *session;
} ZLIB_OPAQUE;
/*
* zlib_error --
- * Output an error message, and return a standard error code.
+ * Output an error message, and return a standard error code.
*/
static int
-zlib_error(
- WT_COMPRESSOR *compressor, WT_SESSION *session, const char *call, int error)
+zlib_error(WT_COMPRESSOR *compressor, WT_SESSION *session, const char *call, int error)
{
- WT_EXTENSION_API *wt_api;
+ WT_EXTENSION_API *wt_api;
- wt_api = ((ZLIB_COMPRESSOR *)compressor)->wt_api;
+ wt_api = ((ZLIB_COMPRESSOR *)compressor)->wt_api;
- (void)wt_api->err_printf(wt_api, session,
- "zlib error: %s: %s: %d", call, zError(error), error);
- return (WT_ERROR);
+ (void)wt_api->err_printf(wt_api, session, "zlib error: %s: %s: %d", call, zError(error), error);
+ return (WT_ERROR);
}
/*
* zalloc --
- * Allocate a scratch buffer.
+ * Allocate a scratch buffer.
*/
static void *
zalloc(void *cookie, uint32_t number, uint32_t size)
{
- ZLIB_OPAQUE *opaque;
- WT_EXTENSION_API *wt_api;
+ ZLIB_OPAQUE *opaque;
+ WT_EXTENSION_API *wt_api;
- opaque = cookie;
- wt_api = ((ZLIB_COMPRESSOR *)opaque->compressor)->wt_api;
- return (wt_api->scr_alloc(
- wt_api, opaque->session, (size_t)number * size));
+ opaque = cookie;
+ wt_api = ((ZLIB_COMPRESSOR *)opaque->compressor)->wt_api;
+ return (wt_api->scr_alloc(wt_api, opaque->session, (size_t)number * size));
}
/*
* zfree --
- * Free a scratch buffer.
+ * Free a scratch buffer.
*/
static void
zfree(void *cookie, void *p)
{
- ZLIB_OPAQUE *opaque;
- WT_EXTENSION_API *wt_api;
+ ZLIB_OPAQUE *opaque;
+ WT_EXTENSION_API *wt_api;
- opaque = cookie;
- wt_api = ((ZLIB_COMPRESSOR *)opaque->compressor)->wt_api;
- wt_api->scr_free(wt_api, opaque->session, p);
+ opaque = cookie;
+ wt_api = ((ZLIB_COMPRESSOR *)opaque->compressor)->wt_api;
+ wt_api->scr_free(wt_api, opaque->session, p);
}
/*
* zlib_compress --
- * WiredTiger zlib compression.
+ * WiredTiger zlib compression.
*/
static int
-zlib_compress(WT_COMPRESSOR *compressor, WT_SESSION *session,
- uint8_t *src, size_t src_len,
- uint8_t *dst, size_t dst_len,
- size_t *result_lenp, int *compression_failed)
+zlib_compress(WT_COMPRESSOR *compressor, WT_SESSION *session, uint8_t *src, size_t src_len,
+ uint8_t *dst, size_t dst_len, size_t *result_lenp, int *compression_failed)
{
- ZLIB_COMPRESSOR *zlib_compressor;
- ZLIB_OPAQUE opaque;
- z_stream zs;
- int ret;
-
- zlib_compressor = (ZLIB_COMPRESSOR *)compressor;
-
- memset(&zs, 0, sizeof(zs));
- zs.zalloc = zalloc;
- zs.zfree = zfree;
- opaque.compressor = compressor;
- opaque.session = session;
- zs.opaque = &opaque;
-
- if ((ret = deflateInit(&zs, zlib_compressor->zlib_level)) != Z_OK)
- return (zlib_error(compressor, session, "deflateInit", ret));
-
- zs.next_in = src;
- zs.avail_in = (uint32_t)src_len;
- zs.next_out = dst;
- zs.avail_out = (uint32_t)dst_len;
- if (deflate(&zs, Z_FINISH) == Z_STREAM_END) {
- *compression_failed = 0;
- *result_lenp = (size_t)zs.total_out;
- } else
- *compression_failed = 1;
-
- if ((ret = deflateEnd(&zs)) != Z_OK && ret != Z_DATA_ERROR)
- return (zlib_error(compressor, session, "deflateEnd", ret));
-
- return (0);
+ ZLIB_COMPRESSOR *zlib_compressor;
+ ZLIB_OPAQUE opaque;
+ z_stream zs;
+ int ret;
+
+ zlib_compressor = (ZLIB_COMPRESSOR *)compressor;
+
+ memset(&zs, 0, sizeof(zs));
+ zs.zalloc = zalloc;
+ zs.zfree = zfree;
+ opaque.compressor = compressor;
+ opaque.session = session;
+ zs.opaque = &opaque;
+
+ if ((ret = deflateInit(&zs, zlib_compressor->zlib_level)) != Z_OK)
+ return (zlib_error(compressor, session, "deflateInit", ret));
+
+ zs.next_in = src;
+ zs.avail_in = (uint32_t)src_len;
+ zs.next_out = dst;
+ zs.avail_out = (uint32_t)dst_len;
+ if (deflate(&zs, Z_FINISH) == Z_STREAM_END) {
+ *compression_failed = 0;
+ *result_lenp = (size_t)zs.total_out;
+ } else
+ *compression_failed = 1;
+
+ if ((ret = deflateEnd(&zs)) != Z_OK && ret != Z_DATA_ERROR)
+ return (zlib_error(compressor, session, "deflateEnd", ret));
+
+ return (0);
}
/*
* zlib_decompress --
- * WiredTiger zlib decompression.
+ * WiredTiger zlib decompression.
*/
static int
-zlib_decompress(WT_COMPRESSOR *compressor, WT_SESSION *session,
- uint8_t *src, size_t src_len,
- uint8_t *dst, size_t dst_len,
- size_t *result_lenp)
+zlib_decompress(WT_COMPRESSOR *compressor, WT_SESSION *session, uint8_t *src, size_t src_len,
+ uint8_t *dst, size_t dst_len, size_t *result_lenp)
{
- ZLIB_OPAQUE opaque;
- z_stream zs;
- int ret, tret;
-
- memset(&zs, 0, sizeof(zs));
- zs.zalloc = zalloc;
- zs.zfree = zfree;
- opaque.compressor = compressor;
- opaque.session = session;
- zs.opaque = &opaque;
-
- if ((ret = inflateInit(&zs)) != Z_OK)
- return (zlib_error(compressor, session, "inflateInit", ret));
-
- zs.next_in = src;
- zs.avail_in = (uint32_t)src_len;
- zs.next_out = dst;
- zs.avail_out = (uint32_t)dst_len;
- while ((ret = inflate(&zs, Z_FINISH)) == Z_OK)
- ;
- if (ret == Z_STREAM_END) {
- *result_lenp = (size_t)zs.total_out;
- ret = Z_OK;
- }
-
- if ((tret = inflateEnd(&zs)) != Z_OK && ret == Z_OK)
- ret = tret;
-
- return (ret == Z_OK ?
- 0 : zlib_error(compressor, session, "inflate", ret));
+ ZLIB_OPAQUE opaque;
+ z_stream zs;
+ int ret, tret;
+
+ memset(&zs, 0, sizeof(zs));
+ zs.zalloc = zalloc;
+ zs.zfree = zfree;
+ opaque.compressor = compressor;
+ opaque.session = session;
+ zs.opaque = &opaque;
+
+ if ((ret = inflateInit(&zs)) != Z_OK)
+ return (zlib_error(compressor, session, "inflateInit", ret));
+
+ zs.next_in = src;
+ zs.avail_in = (uint32_t)src_len;
+ zs.next_out = dst;
+ zs.avail_out = (uint32_t)dst_len;
+ while ((ret = inflate(&zs, Z_FINISH)) == Z_OK)
+ ;
+ if (ret == Z_STREAM_END) {
+ *result_lenp = (size_t)zs.total_out;
+ ret = Z_OK;
+ }
+
+ if ((tret = inflateEnd(&zs)) != Z_OK && ret == Z_OK)
+ ret = tret;
+
+ return (ret == Z_OK ? 0 : zlib_error(compressor, session, "inflate", ret));
}
/*
* zlib_terminate --
- * WiredTiger zlib compression termination.
+ * WiredTiger zlib compression termination.
*/
static int
zlib_terminate(WT_COMPRESSOR *compressor, WT_SESSION *session)
{
- (void)session; /* Unused parameters */
+ (void)session; /* Unused parameters */
- free(compressor);
- return (0);
+ free(compressor);
+ return (0);
}
/*
* zlib_add_compressor --
- * Add a zlib compressor.
+ * Add a zlib compressor.
*/
static int
zlib_add_compressor(WT_CONNECTION *connection, const char *name, int zlib_level)
{
- ZLIB_COMPRESSOR *zlib_compressor;
- int ret;
+ ZLIB_COMPRESSOR *zlib_compressor;
+ int ret;
- if ((zlib_compressor = calloc(1, sizeof(ZLIB_COMPRESSOR))) == NULL)
- return (errno);
+ if ((zlib_compressor = calloc(1, sizeof(ZLIB_COMPRESSOR))) == NULL)
+ return (errno);
- zlib_compressor->compressor.compress = zlib_compress;
- zlib_compressor->compressor.decompress = zlib_decompress;
- zlib_compressor->compressor.pre_size = NULL;
- zlib_compressor->compressor.terminate = zlib_terminate;
+ zlib_compressor->compressor.compress = zlib_compress;
+ zlib_compressor->compressor.decompress = zlib_decompress;
+ zlib_compressor->compressor.pre_size = NULL;
+ zlib_compressor->compressor.terminate = zlib_terminate;
- zlib_compressor->wt_api = connection->get_extension_api(connection);
- zlib_compressor->zlib_level = zlib_level;
+ zlib_compressor->wt_api = connection->get_extension_api(connection);
+ zlib_compressor->zlib_level = zlib_level;
- /* Load the compressor. */
- if ((ret = connection->add_compressor(
- connection, name, (WT_COMPRESSOR *)zlib_compressor, NULL)) == 0)
- return (0);
+ /* Load the compressor. */
+ if ((ret = connection->add_compressor(
+ connection, name, (WT_COMPRESSOR *)zlib_compressor, NULL)) == 0)
+ return (0);
- free(zlib_compressor);
- return (ret);
+ free(zlib_compressor);
+ return (ret);
}
/*
* zlib_init_config --
- * Handle zlib configuration.
+ * Handle zlib configuration.
*/
static int
-zlib_init_config(
- WT_CONNECTION *connection, WT_CONFIG_ARG *config, int *zlib_levelp)
+zlib_init_config(WT_CONNECTION *connection, WT_CONFIG_ARG *config, int *zlib_levelp)
{
- WT_CONFIG_ITEM v;
- WT_EXTENSION_API *wt_api;
- int ret, zlib_level;
-
- /* If configured as a built-in, there's no configuration argument. */
- if (config == NULL)
- return (0);
-
- /*
- * Zlib compression engine allows applications to specify a compression
- * level; review the configuration.
- */
- wt_api = connection->get_extension_api(connection);
- if ((ret = wt_api->config_get(
- wt_api, NULL, config, "compression_level", &v)) == 0) {
- /*
- * Between 0-9: level: see zlib manual.
- */
- zlib_level = (int)v.val;
- if (zlib_level < 0 || zlib_level > 9) {
- (void)wt_api->err_printf(wt_api, NULL,
- "zlib_init_config: "
- "unsupported compression level %d",
- zlib_level);
- return (EINVAL);
- }
- *zlib_levelp = zlib_level;
- } else if (ret != WT_NOTFOUND) {
- (void)wt_api->err_printf(wt_api, NULL,
- "zlib_init_config: %s",
- wt_api->strerror(wt_api, NULL, ret));
- return (ret);
- }
-
- return (0);
+ WT_CONFIG_ITEM v;
+ WT_EXTENSION_API *wt_api;
+ int ret, zlib_level;
+
+ /* If configured as a built-in, there's no configuration argument. */
+ if (config == NULL)
+ return (0);
+
+ /*
+ * Zlib compression engine allows applications to specify a compression level; review the
+ * configuration.
+ */
+ wt_api = connection->get_extension_api(connection);
+ if ((ret = wt_api->config_get(wt_api, NULL, config, "compression_level", &v)) == 0) {
+ /*
+ * Between 0-9: level: see zlib manual.
+ */
+ zlib_level = (int)v.val;
+ if (zlib_level < 0 || zlib_level > 9) {
+ (void)wt_api->err_printf(wt_api, NULL,
+ "zlib_init_config: "
+ "unsupported compression level %d",
+ zlib_level);
+ return (EINVAL);
+ }
+ *zlib_levelp = zlib_level;
+ } else if (ret != WT_NOTFOUND) {
+ (void)wt_api->err_printf(
+ wt_api, NULL, "zlib_init_config: %s", wt_api->strerror(wt_api, NULL, ret));
+ return (ret);
+ }
+
+ return (0);
}
int zlib_extension_init(WT_CONNECTION *, WT_CONFIG_ARG *);
/*
* zlib_extension_init --
- * WiredTiger zlib compression extension - called directly when zlib
- * support is built in, or via wiredtiger_extension_init when zlib support
- * is included via extension loading.
+ * WiredTiger zlib compression extension - called directly when zlib support is built in, or via
+ * wiredtiger_extension_init when zlib support is included via extension loading.
*/
int
zlib_extension_init(WT_CONNECTION *connection, WT_CONFIG_ARG *config)
{
- int ret, zlib_level;
+ int ret, zlib_level;
- zlib_level = Z_DEFAULT_COMPRESSION; /* Default */
- if ((ret = zlib_init_config(connection, config, &zlib_level)) != 0)
- return (ret);
+ zlib_level = Z_DEFAULT_COMPRESSION; /* Default */
+ if ((ret = zlib_init_config(connection, config, &zlib_level)) != 0)
+ return (ret);
- if ((ret = zlib_add_compressor(connection, "zlib", zlib_level)) != 0)
- return (ret);
+ if ((ret = zlib_add_compressor(connection, "zlib", zlib_level)) != 0)
+ return (ret);
- /* Raw compression API backward compatibility. */
- if ((ret = zlib_add_compressor(
- connection, "zlib-noraw", zlib_level)) != 0)
- return (ret);
- return (0);
+ /* Raw compression API backward compatibility. */
+ if ((ret = zlib_add_compressor(connection, "zlib-noraw", zlib_level)) != 0)
+ return (ret);
+ return (0);
}
/*
- * We have to remove this symbol when building as a builtin extension otherwise
- * it will conflict with other builtin libraries.
+ * We have to remove this symbol when building as a builtin extension otherwise it will conflict
+ * with other builtin libraries.
*/
-#ifndef HAVE_BUILTIN_EXTENSION_SNAPPY
+#ifndef HAVE_BUILTIN_EXTENSION_SNAPPY
/*
* wiredtiger_extension_init --
- * WiredTiger zlib compression extension.
+ * WiredTiger zlib compression extension.
*/
int
wiredtiger_extension_init(WT_CONNECTION *connection, WT_CONFIG_ARG *config)
{
- return (zlib_extension_init(connection, config));
+ return (zlib_extension_init(connection, config));
}
#endif