log: refactoring to make compatible with no-FreeRTOS builds

components/log/log_noos.c

@@ -0,0 +1,46 @@
+// Copyright 2019 Espressif Systems (Shanghai) PTE LTD
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <assert.h>
+#include "esp_log_private.h"
+#include "soc/cpu.h"  // for esp_cpu_get_ccount()
+
+static int s_lock = 0;
+
+void esp_log_impl_lock(void)
+{
+    assert(s_lock == 0);
+    s_lock = 1;
+}
+
+bool esp_log_lock_impl_timeout(void)
+{
+    esp_log_impl_lock();
+    return true;
+}
+
+void esp_log_impl_unlock(void)
+{
+    assert(s_lock == 1);
+    s_lock = 0;
+}
+
+/* FIXME: define an API for getting the timestamp in soc/hal */
+uint32_t esp_log_early_timestamp(void)
+{
+    extern uint32_t g_ticks_per_us_pro;
+    return esp_cpu_get_ccount() / (g_ticks_per_us_pro * 1000);
+}
+
+uint32_t esp_log_timestamp(void) __attribute__((alias("esp_log_early_timestamp")));