[PATCH 1/3] eal/windows: translate Windows errors to errno-style errors

[Tyler Retzlaff <roretzla@linux.microsoft.com>]

Add function to translate Windows error codes to errno-style error
codes. The possible return values are chosen so that we have as
much semantical compatibility between platforms as possible.

Signed-off-by: Narcisa Vasile <navasile@microsoft.com>
Signed-off-by: Tyler Retzlaff <roretzla@linux.microsoft.com>
---
 lib/eal/windows/rte_thread.c | 48 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)

diff --git a/lib/eal/windows/rte_thread.c b/lib/eal/windows/rte_thread.c
index 667287c..b3b5362 100644
--- a/lib/eal/windows/rte_thread.c
+++ b/lib/eal/windows/rte_thread.c
@@ -11,6 +11,54 @@ struct eal_tls_key {
 	DWORD thread_index;
 };
 
+/* Translates the most common error codes related to threads */
+static int
+thread_translate_win32_error(DWORD error)
+{
+	switch (error) {
+	case ERROR_SUCCESS:
+		return 0;
+
+	case ERROR_INVALID_PARAMETER:
+		return EINVAL;
+
+	case ERROR_INVALID_HANDLE:
+		return EFAULT;
+
+	case ERROR_NOT_ENOUGH_MEMORY:
+		/* FALLTHROUGH */
+	case ERROR_NO_SYSTEM_RESOURCES:
+		return ENOMEM;
+
+	case ERROR_PRIVILEGE_NOT_HELD:
+		/* FALLTHROUGH */
+	case ERROR_ACCESS_DENIED:
+		return EACCES;
+
+	case ERROR_ALREADY_EXISTS:
+		return EEXIST;
+
+	case ERROR_POSSIBLE_DEADLOCK:
+		return EDEADLK;
+
+	case ERROR_INVALID_FUNCTION:
+		/* FALLTHROUGH */
+	case ERROR_CALL_NOT_IMPLEMENTED:
+		return ENOSYS;
+	}
+
+	return EINVAL;
+}
+
+static int
+thread_log_last_error(const char *message)
+{
+	DWORD error = GetLastError();
+	RTE_LOG(DEBUG, EAL, "GetLastError()=%lu: %s\n", error, message);
+
+	return thread_translate_win32_error(error);
+}
+
 int
 rte_thread_key_create(rte_thread_key *key,
 		__rte_unused void (*destructor)(void *))
-- 
1.8.3.1