From a07d7c4e29f9329a1c98fbecc2e54ed6b663caef Mon Sep 17 00:00:00 2001
From: Yann Collet <cyan@fb.com>
Date: Wed, 16 Aug 2023 10:43:39 -0700
Subject: [PATCH] added ZSTD_decompressDCtx() benchmark option to fullbench

useful to compare the difference between ZSTD_decompress
and ZSTD_decompressDCtx().
---
 tests/fullbench.c | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/tests/fullbench.c b/tests/fullbench.c
index 0391107b9..c8f0c0af1 100644
--- a/tests/fullbench.c
+++ b/tests/fullbench.c
@@ -138,7 +138,14 @@ static size_t local_ZSTD_decompress(const void* src, size_t srcSize,
     return ZSTD_decompress(dst, dstSize, buff2, g_cSize);
 }
 
-static ZSTD_DCtx* g_zdc = NULL;
+static ZSTD_DCtx* g_zdc = NULL; /* will be initialized within benchMem */
+static size_t local_ZSTD_decompressDCtx(const void* src, size_t srcSize,
+                                    void* dst, size_t dstSize,
+                                    void* buff2)
+{
+    (void)src; (void)srcSize;
+    return ZSTD_decompressDCtx(g_zdc, dst, dstSize, buff2, g_cSize);
+}
 
 #ifndef ZSTD_DLL_IMPORT
 
@@ -452,6 +459,9 @@ static int benchMem(unsigned benchNb,
     case 3:
         benchFunction = local_ZSTD_compress_freshCCtx; benchName = "compress_freshCCtx";
         break;
+    case 4:
+        benchFunction = local_ZSTD_decompressDCtx; benchName = "decompressDCtx";
+        break;
 #ifndef ZSTD_DLL_IMPORT
     case 11:
         benchFunction = local_ZSTD_compressContinue; benchName = "compressContinue";
@@ -551,6 +561,9 @@ static int benchMem(unsigned benchNb,
     case 3:
         payload = &cparams;
         break;
+    case 4:
+        g_cSize = ZSTD_compress(dstBuff2, dstBuffSize, src, srcSize, cLevel);
+        break;
 #ifndef ZSTD_DLL_IMPORT
     case 11:
         payload = &cparams;
-- 
2.47.2