1 files changed, 83 insertions, 0 deletions
diff --git a/archive/2024/winter/bsc_dichler/experiments/malloc/main.c b/archive/2024/winter/bsc_dichler/experiments/malloc/main.c
new file mode 100644
index 000000000..58932af78
--- /dev/null
+++ b/archive/2024/winter/bsc_dichler/experiments/malloc/main.c
@@ -0,0 +1,83 @@
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <assert.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <sys/auxv.h>
+#include <sys/mman.h>
+#include <sys/prctl.h>
+#include <time.h>
+#include "../allocator/allocator.h"
+
+#define _GNU_SOURCE
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/prctl.h>
+
+#define PR_TAGGED_ADDR_ENABLE (1UL << 0)
+
+#define WARUM_UP 1
+
+struct bench {
+    size_t allocation;
+    size_t bytes_to_alloc;
+    void *ptrs[ALLOCATIONS];
+};
+
+void benchmark(struct bench *bench) {
+    for (size_t i = 0; i < bench->allocation; ++i) {
+        bench->ptrs[i] = malloc(bench->bytes_to_alloc);
+    }
+}
+
+int main(int argc, char *args[]) {
+    if (argc != 3) {
+        printf("Usage: %s <iterations> <size>\n", args[0]);
+        exit(EXIT_FAILURE);
+    }
+
+    size_t iterations = atoll(args[1]);
+    size_t size = atoll(args[2]);
+
+    size_t allocations = (1 << 28) / size;
+    // ensure we size is a multiple of 16, to match granularity
+    assert(size % 16 == 0);
+    assert(allocations * size < (1 << 29));
+
+    void *ptr = malloc(1024);
+
+    struct bench *bench= alloc(sizeof(struct bench));
+    bench->allocation = allocations;
+    bench->bytes_to_alloc = size;
+    for (size_t i = 0; i < iterations + WARUM_UP; ++i) {
+
+        struct timespec s, e1, e2;
+        clock_gettime(CLOCK_MONOTONIC_RAW, &s);
+        benchmark(bench);
+        clock_gettime(CLOCK_MONOTONIC_RAW, &e1);
+
+        for (size_t j = 0; j < bench->allocation; ++j) {
+            free(bench->ptrs[j]);
+        }
+
+        clock_gettime(CLOCK_MONOTONIC_RAW, &e2);
+
+        if (i > WARUM_UP) {
+            uint64_t duration_allocation = 1e9 * (e1.tv_sec - s.tv_sec) + (e1.tv_nsec - s.tv_nsec);
+            uint64_t duration_deallocation = 1e9 * (e2.tv_sec - e1.tv_sec) + (e2.tv_nsec - e1.tv_nsec);
+
+            printf("%ld;%ld;%ld;%ld\n", size, allocations, duration_allocation, duration_deallocation);
+        }
+
+    }
+
+    alloc_free(bench, sizeof(struct bench));
+    free(ptr);
+}