adding iris benchmark

[c11concurrency-benchmarks.git] / iris / include / snprintf_formatter.h

diff --git a/iris/include/snprintf_formatter.h b/iris/include/snprintf_formatter.h
new file mode 100644 (file)
index 0000000..5dfdcbc
--- /dev/null
+++ b/iris/include/snprintf_formatter.h
@@ -0,0 +1,42 @@
+#ifndef IRIS_SNPRINTF_FORMATTER_H_
+#define IRIS_SNPRINTF_FORMATTER_H_
+
+#include <cstdio>
+#include <utility>
+
+#include <assert.h>
+
+#include "formatter.h"
+#include "utils.h"
+#include "define.h"
+#include "buffered_writer.h"
+
+namespace iris {
+class snprintf_formatter {
+public:
+
+template<typename... Args>
+static void format(buffered_writer * bw, const char * fmt, Args&&... args) {
+    size_t n;
+    while (true) {
+        n = std::snprintf(bw->write_pointer(), bw->freespace(), fmt, args...);
+        if (iris_unlikely(n < 0)) {
+            return;//skip over this formatting if error occurred
+        }
+        if (iris_unlikely(n >= bw->freespace())) {
+            bw->flush(); // flush buffer and retried
+            continue;
+        }
+        bw->inc_write_pointer(n);
+        assert(*bw->write_pointer() == 0);
+        *bw->write_pointer() = '\n';// replace '\0' with '\n'
+        bw->inc_write_pointer(1);
+        break; // TODO what to do with failed formatting?
+    }
+
+}
+
+    
+};
+}
+#endif
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