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File zstdpool.diff of Package rpm

--- rpmio/rpmio.c.orig	2021-06-21 12:00:44.648612706 +0000
+++ rpmio/rpmio.c	2022-04-13 13:48:55.224954032 +0000
@@ -8,6 +8,7 @@
 #include <ctype.h>
 #include <dirent.h>
 #include <fcntl.h>
+#include <pthread.h>
 #if defined(__linux__)
 #include <sys/personality.h>
 #endif
@@ -1034,6 +1035,7 @@ static const FDIO_t lzdio = &lzdio_s;
 /* Support for ZSTD library.  */
 #ifdef HAVE_ZSTD
 
+#define ZSTD_STATIC_LINKING_ONLY
 #include <zstd.h>
 
 typedef struct rpmzstd_s {
@@ -1048,6 +1050,29 @@ typedef struct rpmzstd_s {
     ZSTD_outBuffer zob;         /*!< ZSTD_outBuffer */
 } * rpmzstd;
 
+#if ZSTD_VERSION_NUMBER >= 10407
+
+static pthread_once_t zstdThreadPoolCreated = PTHREAD_ONCE_INIT;
+static ZSTD_threadPool *zstdThreadPool;
+static int zstdThreadPoolThreads;
+
+static void zstdCreateThreadPool(void)
+{
+    int numthreads = rpmExpandNumeric("%{?_zstd_pool_threads}%{?!_zstd_pool_threads:-1}");
+    if (numthreads >= 0)
+        numthreads = get_compression_threads(numthreads > 0 ? numthreads : -1);
+    if (numthreads > 0) {
+        zstdThreadPoolThreads = numthreads;
+        zstdThreadPool = ZSTD_createThreadPool(numthreads);
+        if (!zstdThreadPool)
+            rpmlog(RPMLOG_WARNING, "Could not create zstd thread pool for %d threads\n", numthreads);
+        else
+            rpmlog(RPMLOG_DEBUG, "Created zstd thread pool for %d threads\n", numthreads);
+    }
+}
+
+#endif
+
 static rpmzstd rpmzstdNew(int fdno, const char *fmode)
 {
     int flags = 0;
@@ -1133,8 +1158,18 @@ static rpmzstd rpmzstdNew(int fdno, cons
 
 	threads = get_compression_threads(threads);
 	if (threads > 0) {
-	    if (ZSTD_isError (ZSTD_CCtx_setParameter(_stream, ZSTD_c_nbWorkers, threads)))
+	    if (ZSTD_isError (ZSTD_CCtx_setParameter(_stream, ZSTD_c_nbWorkers, threads))) {
 		rpmlog(RPMLOG_DEBUG, "zstd library does not support multi-threading\n");
+	    } else {
+#if ZSTD_VERSION_NUMBER >= 10407
+		pthread_once(&zstdThreadPoolCreated, zstdCreateThreadPool);
+		if (zstdThreadPool) {
+		    if (threads > zstdThreadPoolThreads)
+			ZSTD_CCtx_setParameter(_stream, ZSTD_c_nbWorkers, zstdThreadPoolThreads);
+		    ZSTD_CCtx_refThreadPool(_stream, zstdThreadPool);
+		}
+#endif
+	    }
 	}
 
 	nb = ZSTD_CStreamOutSize();

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File zstdpool.diff of Package rpm

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