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Code Issues Releases 1 Activity

Modernize macros to use do { } while (0)

Browse Source 
This PR introduces no functional changes. It attempts to change all
macros currently using `{ }` or some variant of that to to
`do { } while (0)`, and introduces trailing `;` where necessary.
There were no bugs found during this migration.

The bug in Visual Studios warning on this has been fixed since VS2015.
Additionally, we have several instances of `do { } while (0)` which have
been present for several releases, so we don't have to worry about
breaking peoples builds.

Fixes Issue #3830.
This commit is contained in:
Nick Terrell 2023-11-21 13:26:25 -08:00 committed by Nick Terrell
parent 6b3d12fe54
commit 8193250615
12 changed files with 207 additions and 169 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
lib/common/compiler.h
View File

@ -132,8 +132,8 @@
/* prefetch
* can be disabled, by declaring NO_PREFETCH build macro */
#if defined(NO_PREFETCH)
# define PREFETCH_L1(ptr) (void)(ptr) /* disabled */
# define PREFETCH_L2(ptr) (void)(ptr) /* disabled */
# define PREFETCH_L1(ptr) do { (void)(ptr); } while (0) /* disabled */
# define PREFETCH_L2(ptr) do { (void)(ptr); } while (0) /* disabled */
#else
# if defined(_MSC_VER) && (defined(_M_X64) || defined(_M_I86)) && !defined(_M_ARM64EC) /* _mm_prefetch() is not defined outside of x86/x64 */
# include <mmintrin.h> /* https://msdn.microsoft.com/fr-fr/library/84szxsww(v=vs.90).aspx */
@ -143,24 +143,25 @@
# define PREFETCH_L1(ptr) __builtin_prefetch((ptr), 0 /* rw==read */, 3 /* locality */)
# define PREFETCH_L2(ptr) __builtin_prefetch((ptr), 0 /* rw==read */, 2 /* locality */)
# elif defined(__aarch64__)
# define PREFETCH_L1(ptr) __asm__ __volatile__("prfm pldl1keep, %0" ::"Q"(*(ptr)))
# define PREFETCH_L2(ptr) __asm__ __volatile__("prfm pldl2keep, %0" ::"Q"(*(ptr)))
# define PREFETCH_L1(ptr) do { __asm__ __volatile__("prfm pldl1keep, %0" ::"Q"(*(ptr))); } while (0)
# define PREFETCH_L2(ptr) do { __asm__ __volatile__("prfm pldl2keep, %0" ::"Q"(*(ptr))); } while (0)
# else
# define PREFETCH_L1(ptr) (void)(ptr) /* disabled */
# define PREFETCH_L2(ptr) (void)(ptr) /* disabled */
# define PREFETCH_L1(ptr) do { (void)(ptr); } while (0) /* disabled */
# define PREFETCH_L2(ptr) do { (void)(ptr); } while (0) /* disabled */
# endif
#endif /* NO_PREFETCH */
#define CACHELINE_SIZE 64
#define PREFETCH_AREA(p, s) { \
const char* const _ptr = (const char*)(p); \
size_t const _size = (size_t)(s); \
size_t _pos; \
for (_pos=0; _pos<_size; _pos+=CACHELINE_SIZE) { \
PREFETCH_L2(_ptr + _pos); \
} \
}
#define PREFETCH_AREA(p, s) \
do { \
const char* const _ptr = (const char*)(p); \
size_t const _size = (size_t)(s); \
size_t _pos; \
for (_pos=0; _pos<_size; _pos+=CACHELINE_SIZE) { \
PREFETCH_L2(_ptr + _pos); \
} \
} while (0)
/* vectorization
* older GCC (pre gcc-4.3 picked as the cutoff) uses a different syntax,
@ -189,9 +190,9 @@
#endif
#if __has_builtin(__builtin_unreachable) || (defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5)))
# define ZSTD_UNREACHABLE { assert(0), __builtin_unreachable(); }
# define ZSTD_UNREACHABLE do { assert(0), __builtin_unreachable(); } while (0)
#else
# define ZSTD_UNREACHABLE { assert(0); }
# define ZSTD_UNREACHABLE do { assert(0); } while (0)
#endif
/* disable warnings */

27
lib/common/debug.h
View File

@ -85,18 +85,23 @@ extern int g_debuglevel; /* the variable is only declared,
It's useful when enabling very verbose levels
on selective conditions (such as position in src) */
# define RAWLOG(l, ...) { \
if (l<=g_debuglevel) { \
ZSTD_DEBUG_PRINT(__VA_ARGS__); \
} }
# define DEBUGLOG(l, ...) { \
if (l<=g_debuglevel) { \
ZSTD_DEBUG_PRINT(__FILE__ ": " __VA_ARGS__); \
ZSTD_DEBUG_PRINT(" \n"); \
} }
# define RAWLOG(l, ...) \
do { \
if (l<=g_debuglevel) { \
ZSTD_DEBUG_PRINT(__VA_ARGS__); \
} \
} while (0)
# define DEBUGLOG(l, ...) \
do { \
if (l<=g_debuglevel) { \
ZSTD_DEBUG_PRINT(__FILE__ ": " __VA_ARGS__); \
ZSTD_DEBUG_PRINT(" \n"); \
} \
} while (0)
#else
# define RAWLOG(l, ...) {} /* disabled */
# define DEBUGLOG(l, ...) {} /* disabled */
# define RAWLOG(l, ...) do { } while (0) /* disabled */
# define DEBUGLOG(l, ...) do { } while (0) /* disabled */
#endif

81
lib/common/error_private.h
View File

@ -60,8 +60,13 @@ ERR_STATIC unsigned ERR_isError(size_t code) { return (code > ERROR(maxCode)); }
ERR_STATIC ERR_enum ERR_getErrorCode(size_t code) { if (!ERR_isError(code)) return (ERR_enum)0; return (ERR_enum) (0-code); }
/* check and forward error code */
#define CHECK_V_F(e, f) size_t const e = f; if (ERR_isError(e)) return e
#define CHECK_F(f) { CHECK_V_F(_var_err__, f); }
#define CHECK_V_F(e, f) \
size_t const e = f; \
do { \
if (ERR_isError(e)) \
return e; \
} while (0)
#define CHECK_F(f) do { CHECK_V_F(_var_err__, f); } while (0)
/*-****************************************
@ -95,10 +100,12 @@ void _force_has_format_string(const char *format, ...) {
* We want to force this function invocation to be syntactically correct, but
* we don't want to force runtime evaluation of its arguments.
*/
#define _FORCE_HAS_FORMAT_STRING(...) \
if (0) { \
_force_has_format_string(__VA_ARGS__); \
}
#define _FORCE_HAS_FORMAT_STRING(...) \
do { \
if (0) { \
_force_has_format_string(__VA_ARGS__); \
} \
} while (0)
#define ERR_QUOTE(str) #str
@ -109,48 +116,50 @@ void _force_has_format_string(const char *format, ...) {
* In order to do that (particularly, printing the conditional that failed),
* this can't just wrap RETURN_ERROR().
*/
#define RETURN_ERROR_IF(cond, err, ...) \
if (cond) { \
RAWLOG(3, "%s:%d: ERROR!: check %s failed, returning %s", \
__FILE__, __LINE__, ERR_QUOTE(cond), ERR_QUOTE(ERROR(err))); \
_FORCE_HAS_FORMAT_STRING(__VA_ARGS__); \
RAWLOG(3, ": " __VA_ARGS__); \
RAWLOG(3, "\n"); \
return ERROR(err); \
}
#define RETURN_ERROR_IF(cond, err, ...) \
do { \
if (cond) { \
RAWLOG(3, "%s:%d: ERROR!: check %s failed, returning %s", \
__FILE__, __LINE__, ERR_QUOTE(cond), ERR_QUOTE(ERROR(err))); \
_FORCE_HAS_FORMAT_STRING(__VA_ARGS__); \
RAWLOG(3, ": " __VA_ARGS__); \
RAWLOG(3, "\n"); \
return ERROR(err); \
} \
} while (0)
/**
* Unconditionally return the specified error.
*
* In debug modes, prints additional information.
*/
#define RETURN_ERROR(err, ...) \
do { \
RAWLOG(3, "%s:%d: ERROR!: unconditional check failed, returning %s", \
__FILE__, __LINE__, ERR_QUOTE(ERROR(err))); \
_FORCE_HAS_FORMAT_STRING(__VA_ARGS__); \
RAWLOG(3, ": " __VA_ARGS__); \
RAWLOG(3, "\n"); \
return ERROR(err); \
} while(0);
#define RETURN_ERROR(err, ...) \
do { \
RAWLOG(3, "%s:%d: ERROR!: unconditional check failed, returning %s", \
__FILE__, __LINE__, ERR_QUOTE(ERROR(err))); \
_FORCE_HAS_FORMAT_STRING(__VA_ARGS__); \
RAWLOG(3, ": " __VA_ARGS__); \
RAWLOG(3, "\n"); \
return ERROR(err); \
} while(0)
/**
* If the provided expression evaluates to an error code, returns that error code.
*
* In debug modes, prints additional information.
*/
#define FORWARD_IF_ERROR(err, ...) \
do { \
size_t const err_code = (err); \
if (ERR_isError(err_code)) { \
RAWLOG(3, "%s:%d: ERROR!: forwarding error in %s: %s", \
__FILE__, __LINE__, ERR_QUOTE(err), ERR_getErrorName(err_code)); \
_FORCE_HAS_FORMAT_STRING(__VA_ARGS__); \
RAWLOG(3, ": " __VA_ARGS__); \
RAWLOG(3, "\n"); \
return err_code; \
} \
} while(0);
#define FORWARD_IF_ERROR(err, ...) \
do { \
size_t const err_code = (err); \
if (ERR_isError(err_code)) { \
RAWLOG(3, "%s:%d: ERROR!: forwarding error in %s: %s", \
__FILE__, __LINE__, ERR_QUOTE(err), ERR_getErrorName(err_code)); \
_FORCE_HAS_FORMAT_STRING(__VA_ARGS__); \
RAWLOG(3, ": " __VA_ARGS__); \
RAWLOG(3, "\n"); \
return err_code; \
} \
} while(0)
#if defined (__cplusplus)
}

6
lib/common/zstd_internal.h
View File

@ -178,7 +178,7 @@ static void ZSTD_copy8(void* dst, const void* src) {
ZSTD_memcpy(dst, src, 8);
#endif
}
#define COPY8(d,s) { ZSTD_copy8(d,s); d+=8; s+=8; }
#define COPY8(d,s) do { ZSTD_copy8(d,s); d+=8; s+=8; } while (0)
/* Need to use memmove here since the literal buffer can now be located within
the dst buffer. In circumstances where the op "catches up" to where the
@ -198,7 +198,7 @@ static void ZSTD_copy16(void* dst, const void* src) {
ZSTD_memcpy(dst, copy16_buf, 16);
#endif
}
#define COPY16(d,s) { ZSTD_copy16(d,s); d+=16; s+=16; }
#define COPY16(d,s) do { ZSTD_copy16(d,s); d+=16; s+=16; } while (0)
#define WILDCOPY_OVERLENGTH 32
#define WILDCOPY_VECLEN 16
@ -227,7 +227,7 @@ void ZSTD_wildcopy(void* dst, const void* src, ptrdiff_t length, ZSTD_overlap_e
if (ovtype == ZSTD_overlap_src_before_dst && diff < WILDCOPY_VECLEN) {
/* Handle short offset copies. */
do {
COPY8(op, ip)
COPY8(op, ip);
} while (op < oend);
} else {
assert(diff >= WILDCOPY_VECLEN || diff <= -WILDCOPY_VECLEN);

20
lib/compress/zstd_compress.c
View File

@ -650,10 +650,11 @@ static size_t ZSTD_cParam_clampBounds(ZSTD_cParameter cParam, int* value)
return 0;
}
#define BOUNDCHECK(cParam, val) { \
RETURN_ERROR_IF(!ZSTD_cParam_withinBounds(cParam,val), \
parameter_outOfBound, "Param out of bounds"); \
}
#define BOUNDCHECK(cParam, val) \
do { \
RETURN_ERROR_IF(!ZSTD_cParam_withinBounds(cParam,val), \
parameter_outOfBound, "Param out of bounds"); \
} while (0)
static int ZSTD_isUpdateAuthorized(ZSTD_cParameter param)
@ -1392,11 +1393,12 @@ size_t ZSTD_checkCParams(ZSTD_compressionParameters cParams)
static ZSTD_compressionParameters
ZSTD_clampCParams(ZSTD_compressionParameters cParams)
{
# define CLAMP_TYPE(cParam, val, type) { \
ZSTD_bounds const bounds = ZSTD_cParam_getBounds(cParam); \
if ((int)val<bounds.lowerBound) val=(type)bounds.lowerBound; \
else if ((int)val>bounds.upperBound) val=(type)bounds.upperBound; \
}
# define CLAMP_TYPE(cParam, val, type) \
do { \
ZSTD_bounds const bounds = ZSTD_cParam_getBounds(cParam); \
if ((int)val<bounds.lowerBound) val=(type)bounds.lowerBound; \
else if ((int)val>bounds.upperBound) val=(type)bounds.upperBound; \
} while (0)
# define CLAMP(cParam, val) CLAMP_TYPE(cParam, val, unsigned)
CLAMP(ZSTD_c_windowLog, cParams.windowLog);
CLAMP(ZSTD_c_chainLog, cParams.chainLog);

4
lib/compress/zstd_double_fast.c
View File

@ -356,8 +356,8 @@ size_t ZSTD_compressBlock_doubleFast_dictMatchState_generic(
if (ms->prefetchCDictTables) {
size_t const hashTableBytes = (((size_t)1) << dictCParams->hashLog) * sizeof(U32);
size_t const chainTableBytes = (((size_t)1) << dictCParams->chainLog) * sizeof(U32);
PREFETCH_AREA(dictHashLong, hashTableBytes)
PREFETCH_AREA(dictHashSmall, chainTableBytes)
PREFETCH_AREA(dictHashLong, hashTableBytes);
PREFETCH_AREA(dictHashSmall, chainTableBytes);
}
/* init */

2
lib/compress/zstd_fast.c
View File

@ -508,7 +508,7 @@ size_t ZSTD_compressBlock_fast_dictMatchState_generic(
if (ms->prefetchCDictTables) {
size_t const hashTableBytes = (((size_t)1) << dictCParams->hashLog) * sizeof(U32);
PREFETCH_AREA(dictHashTable, hashTableBytes)
PREFETCH_AREA(dictHashTable, hashTableBytes);
}
/* init */

4
lib/compress/zstd_opt.c
View File

@ -1182,7 +1182,7 @@ ZSTD_compressBlock_opt_generic(ZSTD_matchState_t* ms,
for (cur = 1; cur <= last_pos; cur++) {
const BYTE* const inr = ip + cur;
assert(cur < ZSTD_OPT_NUM);
DEBUGLOG(7, "cPos:%zi==rPos:%u", inr-istart, cur)
DEBUGLOG(7, "cPos:%zi==rPos:%u", inr-istart, cur);
/* Fix current position with one literal if cheaper */
{ U32 const litlen = (opt[cur-1].mlen == 0) ? opt[cur-1].litlen + 1 : 1;
@ -1331,7 +1331,7 @@ _shortestPath: /* cur, last_pos, best_mlen, best_off have to be set */
}
/* save sequences */
DEBUGLOG(6, "sending selected sequences into seqStore")
DEBUGLOG(6, "sending selected sequences into seqStore");
{ U32 storePos;
for (storePos=storeStart; storePos <= storeEnd; storePos++) {
U32 const llen = opt[storePos].litlen;

61
lib/compress/zstdmt_compress.c
View File

@ -40,12 +40,13 @@
# include <unistd.h>
# include <sys/times.h>
# define DEBUG_PRINTHEX(l,p,n) { \
unsigned debug_u; \
for (debug_u=0; debug_u<(n); debug_u++) \
RAWLOG(l, "%02X ", ((const unsigned char*)(p))[debug_u]); \
RAWLOG(l, " \n"); \
}
# define DEBUG_PRINTHEX(l,p,n) \
do { \
unsigned debug_u; \
for (debug_u=0; debug_u<(n); debug_u++) \
RAWLOG(l, "%02X ", ((const unsigned char*)(p))[debug_u]); \
RAWLOG(l, " \n"); \
} while (0)
static unsigned long long GetCurrentClockTimeMicroseconds(void)
{
@ -57,25 +58,28 @@ static unsigned long long GetCurrentClockTimeMicroseconds(void)
} }
#define MUTEX_WAIT_TIME_DLEVEL 6
#define ZSTD_PTHREAD_MUTEX_LOCK(mutex) { \
if (DEBUGLEVEL >= MUTEX_WAIT_TIME_DLEVEL) { \
unsigned long long const beforeTime = GetCurrentClockTimeMicroseconds(); \
ZSTD_pthread_mutex_lock(mutex); \
{ unsigned long long const afterTime = GetCurrentClockTimeMicroseconds(); \
unsigned long long const elapsedTime = (afterTime-beforeTime); \
if (elapsedTime > 1000) { /* or whatever threshold you like; I'm using 1 millisecond here */ \
DEBUGLOG(MUTEX_WAIT_TIME_DLEVEL, "Thread took %llu microseconds to acquire mutex %s \n", \
elapsedTime, #mutex); \
} } \
} else { \
ZSTD_pthread_mutex_lock(mutex); \
} \
}
#define ZSTD_PTHREAD_MUTEX_LOCK(mutex) \
do { \
if (DEBUGLEVEL >= MUTEX_WAIT_TIME_DLEVEL) { \
unsigned long long const beforeTime = GetCurrentClockTimeMicroseconds(); \
ZSTD_pthread_mutex_lock(mutex); \
{ unsigned long long const afterTime = GetCurrentClockTimeMicroseconds(); \
unsigned long long const elapsedTime = (afterTime-beforeTime); \
if (elapsedTime > 1000) { \
/* or whatever threshold you like; I'm using 1 millisecond here */ \
DEBUGLOG(MUTEX_WAIT_TIME_DLEVEL, \
"Thread took %llu microseconds to acquire mutex %s \n", \
elapsedTime, #mutex); \
} } \
} else { \
ZSTD_pthread_mutex_lock(mutex); \
} \
} while (0)
#else
# define ZSTD_PTHREAD_MUTEX_LOCK(m) ZSTD_pthread_mutex_lock(m)
# define DEBUG_PRINTHEX(l,p,n) {}
# define DEBUG_PRINTHEX(l,p,n) do { } while (0)
#endif
@ -667,12 +671,13 @@ typedef struct {
unsigned frameChecksumNeeded; /* used only by mtctx */
} ZSTDMT_jobDescription;
#define JOB_ERROR(e) { \
ZSTD_PTHREAD_MUTEX_LOCK(&job->job_mutex); \
job->cSize = e; \
ZSTD_pthread_mutex_unlock(&job->job_mutex); \
goto _endJob; \
}
#define JOB_ERROR(e) \
do { \
ZSTD_PTHREAD_MUTEX_LOCK(&job->job_mutex); \
job->cSize = e; \
ZSTD_pthread_mutex_unlock(&job->job_mutex); \
goto _endJob; \
} while (0)
/* ZSTDMT_compressionJob() is a POOL_function type */
static void ZSTDMT_compressionJob(void* jobDescription)
@ -1101,7 +1106,7 @@ ZSTD_frameProgression ZSTDMT_getFrameProgression(ZSTDMT_CCtx* mtctx)
{ unsigned jobNb;
unsigned lastJobNb = mtctx->nextJobID + mtctx->jobReady; assert(mtctx->jobReady <= 1);
DEBUGLOG(6, "ZSTDMT_getFrameProgression: jobs: from %u to <%u (jobReady:%u)",
mtctx->doneJobID, lastJobNb, mtctx->jobReady)
mtctx->doneJobID, lastJobNb, mtctx->jobReady);
for (jobNb = mtctx->doneJobID ; jobNb < lastJobNb ; jobNb++) {
unsigned const wJobID = jobNb & mtctx->jobIDMask;
ZSTDMT_jobDescription* jobPtr = &mtctx->jobs[wJobID];

118
lib/decompress/huf_decompress.c
View File

@ -304,21 +304,21 @@ static size_t HUF_initRemainingDStream(BIT_DStream_t* bit, HUF_DecompressFastArg
/* Calls X(N) for each stream 0, 1, 2, 3. */
#define HUF_4X_FOR_EACH_STREAM(X) \
{ \
X(0) \
X(1) \
X(2) \
X(3) \
}
do { \
X(0); \
X(1); \
X(2); \
X(3); \
} while (0)
/* Calls X(N, var) for each stream 0, 1, 2, 3. */
#define HUF_4X_FOR_EACH_STREAM_WITH_VAR(X, var) \
{ \
X(0, (var)) \
X(1, (var)) \
X(2, (var)) \
X(3, (var)) \
}
do { \
X(0, (var)); \
X(1, (var)); \
X(2, (var)); \
X(3, (var)); \
} while (0)
#ifndef HUF_FORCE_DECOMPRESS_X2
@ -528,15 +528,19 @@ HUF_decodeSymbolX1(BIT_DStream_t* Dstream, const HUF_DEltX1* dt, const U32 dtLog
}
#define HUF_DECODE_SYMBOLX1_0(ptr, DStreamPtr) \
*ptr++ = HUF_decodeSymbolX1(DStreamPtr, dt, dtLog)
do { *ptr++ = HUF_decodeSymbolX1(DStreamPtr, dt, dtLog); } while (0)
#define HUF_DECODE_SYMBOLX1_1(ptr, DStreamPtr) \
if (MEM_64bits() || (HUF_TABLELOG_MAX<=12)) \
HUF_DECODE_SYMBOLX1_0(ptr, DStreamPtr)
#define HUF_DECODE_SYMBOLX1_1(ptr, DStreamPtr) \
do { \
if (MEM_64bits() || (HUF_TABLELOG_MAX<=12)) \
HUF_DECODE_SYMBOLX1_0(ptr, DStreamPtr); \
} while (0)
#define HUF_DECODE_SYMBOLX1_2(ptr, DStreamPtr) \
if (MEM_64bits()) \
HUF_DECODE_SYMBOLX1_0(ptr, DStreamPtr)
#define HUF_DECODE_SYMBOLX1_2(ptr, DStreamPtr) \
do { \
if (MEM_64bits()) \
HUF_DECODE_SYMBOLX1_0(ptr, DStreamPtr); \
} while (0)
HINT_INLINE size_t
HUF_decodeStreamX1(BYTE* p, BIT_DStream_t* const bitDPtr, BYTE* const pEnd, const HUF_DEltX1* const dt, const U32 dtLog)
@ -781,15 +785,15 @@ void HUF_decompress4X1_usingDTable_internal_fast_c_loop(HUF_DecompressFastArgs*
#endif
#define HUF_4X1_DECODE_SYMBOL(_stream, _symbol) \
{ \
do { \
int const index = (int)(bits[(_stream)] >> 53); \
int const entry = (int)dtable[index]; \
bits[(_stream)] <<= (entry & 0x3F); \
op[(_stream)][(_symbol)] = (BYTE)((entry >> 8) & 0xFF); \
}
} while (0)
#define HUF_4X1_RELOAD_STREAM(_stream) \
{ \
do { \
int const ctz = ZSTD_countTrailingZeros64(bits[(_stream)]); \
int const nbBits = ctz & 7; \
int const nbBytes = ctz >> 3; \
@ -797,21 +801,21 @@ void HUF_decompress4X1_usingDTable_internal_fast_c_loop(HUF_DecompressFastArgs*
ip[(_stream)] -= nbBytes; \
bits[(_stream)] = MEM_read64(ip[(_stream)]) | 1; \
bits[(_stream)] <<= nbBits; \
}
} while (0)
/* Manually unroll the loop because compilers don't consistently
* unroll the inner loops, which destroys performance.
*/
do {
/* Decode 5 symbols in each of the 4 streams */
HUF_4X_FOR_EACH_STREAM_WITH_VAR(HUF_4X1_DECODE_SYMBOL, 0)
HUF_4X_FOR_EACH_STREAM_WITH_VAR(HUF_4X1_DECODE_SYMBOL, 1)
HUF_4X_FOR_EACH_STREAM_WITH_VAR(HUF_4X1_DECODE_SYMBOL, 2)
HUF_4X_FOR_EACH_STREAM_WITH_VAR(HUF_4X1_DECODE_SYMBOL, 3)
HUF_4X_FOR_EACH_STREAM_WITH_VAR(HUF_4X1_DECODE_SYMBOL, 4)
HUF_4X_FOR_EACH_STREAM_WITH_VAR(HUF_4X1_DECODE_SYMBOL, 0);
HUF_4X_FOR_EACH_STREAM_WITH_VAR(HUF_4X1_DECODE_SYMBOL, 1);
HUF_4X_FOR_EACH_STREAM_WITH_VAR(HUF_4X1_DECODE_SYMBOL, 2);
HUF_4X_FOR_EACH_STREAM_WITH_VAR(HUF_4X1_DECODE_SYMBOL, 3);
HUF_4X_FOR_EACH_STREAM_WITH_VAR(HUF_4X1_DECODE_SYMBOL, 4);
/* Reload each of the 4 the bitstreams */
HUF_4X_FOR_EACH_STREAM(HUF_4X1_RELOAD_STREAM)
HUF_4X_FOR_EACH_STREAM(HUF_4X1_RELOAD_STREAM);
} while (op[3] < olimit);
#undef HUF_4X1_DECODE_SYMBOL
@ -1286,15 +1290,19 @@ HUF_decodeLastSymbolX2(void* op, BIT_DStream_t* DStream, const HUF_DEltX2* dt, c
}
#define HUF_DECODE_SYMBOLX2_0(ptr, DStreamPtr) \
ptr += HUF_decodeSymbolX2(ptr, DStreamPtr, dt, dtLog)
do { ptr += HUF_decodeSymbolX2(ptr, DStreamPtr, dt, dtLog); } while (0)
#define HUF_DECODE_SYMBOLX2_1(ptr, DStreamPtr) \
if (MEM_64bits() || (HUF_TABLELOG_MAX<=12)) \
ptr += HUF_decodeSymbolX2(ptr, DStreamPtr, dt, dtLog)
#define HUF_DECODE_SYMBOLX2_1(ptr, DStreamPtr) \
do { \
if (MEM_64bits() || (HUF_TABLELOG_MAX<=12)) \
ptr += HUF_decodeSymbolX2(ptr, DStreamPtr, dt, dtLog); \
} while (0)
#define HUF_DECODE_SYMBOLX2_2(ptr, DStreamPtr) \
if (MEM_64bits()) \
ptr += HUF_decodeSymbolX2(ptr, DStreamPtr, dt, dtLog)
#define HUF_DECODE_SYMBOLX2_2(ptr, DStreamPtr) \
do { \
if (MEM_64bits()) \
ptr += HUF_decodeSymbolX2(ptr, DStreamPtr, dt, dtLog); \
} while (0)
HINT_INLINE size_t
HUF_decodeStreamX2(BYTE* p, BIT_DStream_t* bitDPtr, BYTE* const pEnd,
@ -1594,18 +1602,20 @@ void HUF_decompress4X2_usingDTable_internal_fast_c_loop(HUF_DecompressFastArgs*
}
#endif
#define HUF_4X2_DECODE_SYMBOL(_stream, _decode3) \
if ((_decode3) || (_stream) != 3) { \
int const index = (int)(bits[(_stream)] >> 53); \
HUF_DEltX2 const entry = dtable[index]; \
MEM_write16(op[(_stream)], entry.sequence); \
bits[(_stream)] <<= (entry.nbBits) & 0x3F; \
op[(_stream)] += (entry.length); \
}
#define HUF_4X2_DECODE_SYMBOL(_stream, _decode3) \
do { \
if ((_decode3) || (_stream) != 3) { \
int const index = (int)(bits[(_stream)] >> 53); \
HUF_DEltX2 const entry = dtable[index]; \
MEM_write16(op[(_stream)], entry.sequence); \
bits[(_stream)] <<= (entry.nbBits) & 0x3F; \
op[(_stream)] += (entry.length); \
} \
} while (0)
#define HUF_4X2_RELOAD_STREAM(_stream) \
{ \
HUF_4X2_DECODE_SYMBOL(3, 1) \
do { \
HUF_4X2_DECODE_SYMBOL(3, 1); \
{ \
int const ctz = ZSTD_countTrailingZeros64(bits[(_stream)]); \
int const nbBits = ctz & 7; \
@ -1614,7 +1624,7 @@ void HUF_decompress4X2_usingDTable_internal_fast_c_loop(HUF_DecompressFastArgs*
bits[(_stream)] = MEM_read64(ip[(_stream)]) | 1; \
bits[(_stream)] <<= nbBits; \
} \
}
} while (0)
/* Manually unroll the loop because compilers don't consistently
* unroll the inner loops, which destroys performance.
@ -1624,20 +1634,20 @@ void HUF_decompress4X2_usingDTable_internal_fast_c_loop(HUF_DecompressFastArgs*
* The final stream will be decoded during the reload phase
* to reduce register pressure.
*/
HUF_4X_FOR_EACH_STREAM_WITH_VAR(HUF_4X2_DECODE_SYMBOL, 0)
HUF_4X_FOR_EACH_STREAM_WITH_VAR(HUF_4X2_DECODE_SYMBOL, 0)
HUF_4X_FOR_EACH_STREAM_WITH_VAR(HUF_4X2_DECODE_SYMBOL, 0)
HUF_4X_FOR_EACH_STREAM_WITH_VAR(HUF_4X2_DECODE_SYMBOL, 0)
HUF_4X_FOR_EACH_STREAM_WITH_VAR(HUF_4X2_DECODE_SYMBOL, 0)
HUF_4X_FOR_EACH_STREAM_WITH_VAR(HUF_4X2_DECODE_SYMBOL, 0);
HUF_4X_FOR_EACH_STREAM_WITH_VAR(HUF_4X2_DECODE_SYMBOL, 0);
HUF_4X_FOR_EACH_STREAM_WITH_VAR(HUF_4X2_DECODE_SYMBOL, 0);
HUF_4X_FOR_EACH_STREAM_WITH_VAR(HUF_4X2_DECODE_SYMBOL, 0);
HUF_4X_FOR_EACH_STREAM_WITH_VAR(HUF_4X2_DECODE_SYMBOL, 0);
/* Decode one symbol from the final stream */
HUF_4X2_DECODE_SYMBOL(3, 1)
HUF_4X2_DECODE_SYMBOL(3, 1);
/* Decode 4 symbols from the final stream & reload bitstreams.
* The final stream is reloaded last, meaning that all 5 symbols
* are decoded from the final stream before it is reloaded.
*/
HUF_4X_FOR_EACH_STREAM(HUF_4X2_RELOAD_STREAM)
HUF_4X_FOR_EACH_STREAM(HUF_4X2_RELOAD_STREAM);
} while (op[3] < olimit);
}

2
lib/decompress/zstd_decompress.c
View File

@ -2173,7 +2173,7 @@ size_t ZSTD_decompressStream(ZSTD_DStream* zds, ZSTD_outBuffer* output, ZSTD_inB
/* shortcut : using single-pass mode */
size_t const decompressedSize = ZSTD_decompress_usingDDict(zds, op, (size_t)(oend-op), istart, cSize, ZSTD_getDDict(zds));
if (ZSTD_isError(decompressedSize)) return decompressedSize;
DEBUGLOG(4, "shortcut to single-pass ZSTD_decompress_usingDDict()")
DEBUGLOG(4, "shortcut to single-pass ZSTD_decompress_usingDDict()");
assert(istart != NULL);
ip = istart + cSize;
op = op ? op + decompressedSize : op; /* can occur if frameContentSize = 0 (empty frame) */

18
lib/dictBuilder/zdict.c
View File

@ -74,9 +74,9 @@ static const U32 g_selectivity_default = 9;
* Console display
***************************************/
#undef DISPLAY
#define DISPLAY(...) { fprintf(stderr, __VA_ARGS__); fflush( stderr ); }
#define DISPLAY(...) do { fprintf(stderr, __VA_ARGS__); fflush( stderr ); } while (0)
#undef DISPLAYLEVEL
#define DISPLAYLEVEL(l, ...) if (notificationLevel>=l) { DISPLAY(__VA_ARGS__); } /* 0 : no display; 1: errors; 2: default; 3: details; 4: debug */
#define DISPLAYLEVEL(l, ...) do { if (notificationLevel>=l) { DISPLAY(__VA_ARGS__); } } while (0) /* 0 : no display; 1: errors; 2: default; 3: details; 4: debug */
static clock_t ZDICT_clockSpan(clock_t nPrevious) { return clock() - nPrevious; }
@ -477,10 +477,16 @@ static size_t ZDICT_trainBuffer_legacy(dictItem* dictList, U32 dictListSize,
clock_t const refreshRate = CLOCKS_PER_SEC * 3 / 10;
# undef DISPLAYUPDATE
# define DISPLAYUPDATE(l, ...) if (notificationLevel>=l) { \
if (ZDICT_clockSpan(displayClock) > refreshRate) \
{ displayClock = clock(); DISPLAY(__VA_ARGS__); \
if (notificationLevel>=4) fflush(stderr); } }
# define DISPLAYUPDATE(l, ...) \
do { \
if (notificationLevel>=l) { \
if (ZDICT_clockSpan(displayClock) > refreshRate) { \
displayClock = clock(); \
DISPLAY(__VA_ARGS__); \
} \
if (notificationLevel>=4) fflush(stderr); \
} \
} while (0)
/* init */
DISPLAYLEVEL(2, "\r%70s\r", ""); /* clean display line */