From 8174a918ea3b7cb216bf7ea98cfdc10661b5c37d Mon Sep 17 00:00:00 2001
From: Florian Fischer <florian.fl.fischer@fau.de>
Date: Wed, 6 May 2020 16:56:32 +0200
Subject: make the whole project more python idiomatic

* rename src directory to allocbench
* make global variable names UPPERCASE
* format a lot of code using yapf
* use lowercase ld_preload and ld_library_path as Allocator members
* name expected Errors 'err' and don't raise a new Exception
* disable some pylint messages
---
 src/bumpptr_alloc.c | 64 -----------------------------------------------------
 1 file changed, 64 deletions(-)
 delete mode 100644 src/bumpptr_alloc.c

(limited to 'src/bumpptr_alloc.c')

diff --git a/src/bumpptr_alloc.c b/src/bumpptr_alloc.c
deleted file mode 100644
index ee2928a..0000000
--- a/src/bumpptr_alloc.c
+++ /dev/null
@@ -1,64 +0,0 @@
-#include <assert.h>
-#include <errno.h>
-#include <stddef.h> /* NULL, size_t */
-#include <stdint.h> /* uintptr_t */
-#include <stdio.h>  /* fprintf */
-#include <sys/mman.h> /* mmap */
-
-#define MIN_ALIGNMENT 16
-
-#ifndef MEMSIZE
-#define MEMSIZE 1024*4*1024*1024l
-#endif
-
-#define unlikely(x)     __builtin_expect((x),0)
-
-typedef struct bumpptr {
-	uintptr_t end;
-	uintptr_t ptr;
-} bumpptr_t;
-
-__thread bumpptr_t* tsd = NULL;
-
-static inline void* bump_up(size_t size, size_t align) {
-	assert(align % 2 == 0);
-
-	if (unlikely(tsd == NULL)) {
-		void* mem_start = mmap(NULL, MEMSIZE, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_HUGETLB, -1, 0);
-		if(mem_start == MAP_FAILED) {
-			perror("mmap");
-			return NULL;
-		}
-		tsd = (bumpptr_t*)mem_start;
-		tsd->ptr = (uintptr_t)mem_start + sizeof(bumpptr_t);
-		tsd->end = (uintptr_t)mem_start + MEMSIZE;
-	}
-
-	// align ptr;
-	uintptr_t aligned = (tsd->ptr + align - 1) & ~(align - 1);
-
-	uintptr_t new_ptr = aligned + size;
-	if (new_ptr > tsd->end) {
-		errno = ENOMEM;
-		return NULL;
-	} else {
-		tsd->ptr = new_ptr;
-		return (void*)aligned;
-	}
-}
-
-void* malloc(size_t size) {
-	return bump_up(size, MIN_ALIGNMENT);
-}
-
-void free(__attribute__ ((unused)) void* ptr) {
-}
-
-void* memalign(size_t alignment, size_t size) {
-	return bump_up(size, alignment);
-}
-
-void malloc_stats() {
-	fprintf(stderr, "Bump pointer allocator by muhq\n");
-	fprintf(stderr, "Memsize: %zu, start address: %p, bump pointer %p\n", MEMSIZE, tsd, tsd->ptr);
-}
-- 
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