add real simple realloc benchmark

2 files changed, 39 insertions, 0 deletions

diff --git a/src/benchmarks/realloc/Makefile b/src/benchmarks/realloc/Makefile
new file mode 100644
index 0000000..66b38ca
--- /dev/null
+++ b/src/benchmarks/realloc/Makefile
@@ -0,0 +1,25 @@
+OBJDIR ?= obj
+
+CC ?= gcc
+
+WARNFLAGS ?= -Wall -Wextra
+COMMONFLAGS ?= -fno-builtin -fPIC -DPIC -pthread
+OPTFLAGS ?= -O3 -DNDEBUG
+
+CFLAGS ?= $(OPTFLAGS) $(WARNFLAGS) $(COMMONFLAGS)
+
+LDFLAGS ?= -pthread -static-libgcc
+
+.PHONY = all clean
+
+all: $(OBJDIR)/realloc
+
+$(OBJDIR)/realloc: realloc.c | $(OBJDIR)
+	@echo compiling $@...
+	$(CC) $(LDFLAGS) $(CFLAGS) -o $@ $<
+
+$(OBJDIR):
+	mkdir -p $@
+
+clean:
+	rm -rf $(OBJDIR)
diff --git a/src/benchmarks/realloc/realloc.c b/src/benchmarks/realloc/realloc.c
new file mode 100644
index 0000000..2eddc26
--- /dev/null
+++ b/src/benchmarks/realloc/realloc.c
@@ -0,0 +1,14 @@
+#include <stdlib.h>
+#include <stdio.h>
+
+size_t* array;
+size_t steps = 1;
+int main() {
+	for (int i = 0; i < 100; i++) {
+		if ((array = realloc(array, sizeof(size_t) * steps * i)) == NULL) {
+			perror("realloc");
+			return 1;
+		}
+	}
+	return 0;
+}