1 files changed, 133 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r3/posix/thread2-posix.cpp b/src/VBox/Runtime/r3/posix/thread2-posix.cpp
new file mode 100644
index 00000000..0f9feb76
--- /dev/null
+++ b/src/VBox/Runtime/r3/posix/thread2-posix.cpp
@@ -0,0 +1,133 @@
+/* $Id: thread2-posix.cpp $ */
+/** @file
+ * IPRT - Threads part 2, POSIX.
+ */
+
+/*
+ * Copyright (C) 2006-2022 Oracle and/or its affiliates.
+ *
+ * This file is part of VirtualBox base platform packages, as
+ * available from https://www.virtualbox.org.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, in version 3 of the
+ * License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses>.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
+ * in the VirtualBox distribution, in which case the provisions of the
+ * CDDL are applicable instead of those of the GPL.
+ *
+ * You may elect to license modified versions of this file under the
+ * terms and conditions of either the GPL or the CDDL or both.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#define LOG_GROUP RTLOGGROUP_THREAD
+#include <errno.h>
+#include <pthread.h>
+#include <unistd.h>
+#include <sched.h>
+
+#include <iprt/thread.h>
+#include <iprt/log.h>
+#include <iprt/asm.h>
+#if defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86)
+# include <iprt/asm-amd64-x86.h>
+#endif
+#include <iprt/errcore.h>
+#include "internal/thread.h"
+
+
+RTDECL(RTNATIVETHREAD) RTThreadNativeSelf(void)
+{
+    return (RTNATIVETHREAD)pthread_self();
+}
+
+
+RTDECL(int) RTThreadSleep(RTMSINTERVAL cMillies)
+{
+    LogFlow(("RTThreadSleep: cMillies=%d\n", cMillies));
+    if (!cMillies)
+    {
+        if (!sched_yield())
+        {
+            LogFlow(("RTThreadSleep: returning %Rrc (cMillies=%d)\n", VINF_SUCCESS, cMillies));
+            return VINF_SUCCESS;
+        }
+    }
+    else
+    {
+        struct timespec ts;
+        struct timespec tsrem = {0,0};
+
+        ts.tv_nsec = (cMillies % 1000) * 1000000;
+        ts.tv_sec  = cMillies / 1000;
+        if (!nanosleep(&ts, &tsrem))
+        {
+            LogFlow(("RTThreadSleep: returning %Rrc (cMillies=%d)\n", VINF_SUCCESS, cMillies));
+            return VINF_SUCCESS;
+        }
+    }
+
+    int rc = RTErrConvertFromErrno(errno);
+    LogFlow(("RTThreadSleep: returning %Rrc (cMillies=%d)\n", rc, cMillies));
+    return rc;
+}
+
+
+RTDECL(int) RTThreadSleepNoLog(RTMSINTERVAL cMillies)
+{
+    if (!cMillies)
+    {
+        if (!sched_yield())
+            return VINF_SUCCESS;
+    }
+    else
+    {
+        struct timespec ts;
+        struct timespec tsrem = {0,0};
+
+        ts.tv_nsec = (cMillies % 1000) * 1000000;
+        ts.tv_sec  = cMillies / 1000;
+        if (!nanosleep(&ts, &tsrem))
+            return VINF_SUCCESS;
+    }
+
+    return RTErrConvertFromErrno(errno);
+}
+
+
+RTDECL(bool) RTThreadYield(void)
+{
+#if defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86)
+    uint64_t u64TS = ASMReadTSC();
+#endif
+
+    sched_yield();
+
+#if defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86)
+    u64TS = ASMReadTSC() - u64TS;
+    bool fRc = u64TS > 1500;
+    LogFlow(("RTThreadYield: returning %d (%llu ticks)\n", fRc, u64TS));
+#else
+    bool fRc = true; /* PORTME: Add heuristics for determining whether the cpus was yielded. */
+#endif
+    return fRc;
+}
+