X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=lib%2Flibrte_eal%2Fwindows%2Feal%2Feal.c;h=6a1208c353f00f52d80359b6102970820de9d089;hb=8938998a298ab6dbecbe9f5a0f4ebdfdba90862e;hp=ce460481f8a4272b7c8ee1600135899141864708;hpb=5e373e456e6acdc8acfce046a09afc9c6597e550;p=dpdk.git

diff --git a/lib/librte_eal/windows/eal/eal.c b/lib/librte_eal/windows/eal/eal.c
index ce460481f8..6a1208c353 100644
--- a/lib/librte_eal/windows/eal/eal.c
+++ b/lib/librte_eal/windows/eal/eal.c
@@ -2,21 +2,48 @@
  * Copyright(c) 2019 Intel Corporation
  */
 
+#include <sys/stat.h>
 #include <io.h>
 #include <fcntl.h>
 #include <rte_debug.h>
 #include <rte_eal.h>
+#include <eal_memcfg.h>
 #include <rte_errno.h>
 #include <rte_lcore.h>
 #include <eal_thread.h>
+#include <eal_internal_cfg.h>
+#include <eal_filesystem.h>
+#include <eal_options.h>
 #include <eal_private.h>
 
+/* define fd variable here, because file needs to be kept open for the
+ * duration of the program, as we hold a write lock on it in the primary proc
+ */
+static int mem_cfg_fd = -1;
+
+/* early configuration structure, when memory config is not mmapped */
+static struct rte_mem_config early_mem_config;
+
 /* Address of global and public configuration */
-static struct rte_config rte_config;
+static struct rte_config rte_config = {
+		.mem_config = &early_mem_config,
+};
 
 /* internal configuration (per-core) */
 struct lcore_config lcore_config[RTE_MAX_LCORE];
 
+/* internal configuration */
+struct internal_config internal_config;
+
+/* platform-specific runtime dir */
+static char runtime_dir[PATH_MAX];
+
+const char *
+rte_eal_get_runtime_dir(void)
+{
+	return runtime_dir;
+}
+
 /* Return a pointer to the configuration structure */
 struct rte_config *
 rte_eal_get_configuration(void)
@@ -24,6 +51,38 @@ rte_eal_get_configuration(void)
 	return &rte_config;
 }
 
+/* Detect if we are a primary or a secondary process */
+enum rte_proc_type_t
+eal_proc_type_detect(void)
+{
+	enum rte_proc_type_t ptype = RTE_PROC_PRIMARY;
+	const char *pathname = eal_runtime_config_path();
+
+	/* if we can open the file but not get a write-lock we are a secondary
+	 * process. NOTE: if we get a file handle back, we keep that open
+	 * and don't close it to prevent a race condition between multiple opens
+	 */
+	errno_t err = _sopen_s(&mem_cfg_fd, pathname,
+		_O_RDWR, _SH_DENYNO, _S_IREAD | _S_IWRITE);
+	if (err == 0) {
+		OVERLAPPED soverlapped = { 0 };
+		soverlapped.Offset = sizeof(*rte_config.mem_config);
+		soverlapped.OffsetHigh = 0;
+
+		HANDLE hwinfilehandle = (HANDLE)_get_osfhandle(mem_cfg_fd);
+
+		if (!LockFileEx(hwinfilehandle,
+			LOCKFILE_EXCLUSIVE_LOCK | LOCKFILE_FAIL_IMMEDIATELY, 0,
+			sizeof(*rte_config.mem_config), 0, &soverlapped))
+			ptype = RTE_PROC_SECONDARY;
+	}
+
+	RTE_LOG(INFO, EAL, "Auto-detected process type: %s\n",
+		ptype == RTE_PROC_PRIMARY ? "PRIMARY" : "SECONDARY");
+
+	return ptype;
+}
+
 static int
 sync_func(void *arg __rte_unused)
 {