COMPMID-549 Create a Logger for GraphAPI

Change-Id: If912d8232e12cd496923d55d386898450dac09e2
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/89897
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>

1 files changed, 71 insertions, 0 deletions

diff --git a/arm_compute/core/Logger.h b/arm_compute/core/Logger.h
new file mode 100644
index 0000000000..0848479d37
--- /dev/null
+++ b/arm_compute/core/Logger.h
@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2017 ARM Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef __ARM_COMPUTE_LOGGER_H__
+#define __ARM_COMPUTE_LOGGER_H__
+
+#include <iostream>
+#include <memory>
+
+#ifdef ARM_COMPUTE_DEBUG_ENABLED
+#define ARM_COMPUTE_LOG(x) (arm_compute::Logger::get().log_info() << x)
+#else /* ARM_COMPUTE_DEBUG_ENABLED */
+#define ARM_COMPUTE_LOG(...)
+#endif /* ARM_COMPUTE_DEBUG_ENABLED */
+
+namespace arm_compute
+{
+/**< Verbosity of the logger */
+enum class LoggerVerbosity
+{
+    NONE, /**< No info */
+    INFO  /**< Log info */
+};
+
+/** Logger singleton class */
+class Logger
+{
+public:
+    static Logger &get();
+    void set_logger(std::ostream &ostream, LoggerVerbosity verbosity);
+    std::ostream &log_info();
+
+private:
+    /** Default constructor */
+    Logger();
+    /** Allow instances of this class to be moved */
+    Logger(Logger &&) = default;
+    /** Prevent instances of this class from being copied (As this class contains pointers) */
+    Logger(const Logger &) = delete;
+    /** Prevent instances of this class from being copied (As this class contains pointers) */
+    Logger &operator=(const Logger &) = delete;
+    /** Allow instances of this class to be moved */
+    Logger &operator=(Logger &&) = default;
+
+    std::ostream   *_ostream;
+    std::ostream    _nullstream;
+    LoggerVerbosity _verbosity;
+};
+} // arm_compute
+#endif /* __ARM_COMPUTE_LOGGER_H__ */
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