diff --git a/Makefile b/Makefile
index 26dda13..ce27fd2 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,7 @@
 # Students' Makefile for the Malloc Lab
 #
 CC = gcc
-CFLAGS = -Wall -O2 -m32
+CFLAGS = -Wall -O2 -m32 -g03
 
 OBJS = mdriver.o mm.o memlib.o fsecs.o fcyc.o clock.o ftimer.o
 
diff --git a/TAGS b/TAGS
new file mode 100644
index 0000000..59a5da8
--- /dev/null
+++ b/TAGS
@@ -0,0 +1,274 @@
+!_TAG_FILE_FORMAT	2	/extended format; --format=1 will not append ;" to lines/
+!_TAG_FILE_SORTED	1	/0=unsorted, 1=sorted, 2=foldcase/
+!_TAG_OUTPUT_FILESEP	slash	/slash or backslash/
+!_TAG_OUTPUT_MODE	u-ctags	/u-ctags or e-ctags/
+!_TAG_PROGRAM_AUTHOR	Universal Ctags Team	//
+!_TAG_PROGRAM_NAME	Universal Ctags	/Derived from Exuberant Ctags/
+!_TAG_PROGRAM_URL	https://ctags.io/	/official site/
+!_TAG_PROGRAM_VERSION	0.0.0	/a3c87ab5/
+ALIGN	mm.c	/^#define ALIGN(/;"	d	file:	signature:(size)
+ALIGNMENT	config.h	/^#define ALIGNMENT /;"	d
+ALIGNMENT	mm.c	/^#define ALIGNMENT /;"	d	file:
+ALLOC	mdriver.c	/^    enum {ALLOC, FREE, REALLOC} type; \/* type of request *\/$/;"	e	enum:__anon19bd20ef0108::__anon19bd20ef0203	file:	access:public
+AVG_LIBC_THRUPUT	config.h	/^#define AVG_LIBC_THRUPUT /;"	d
+CACHE_BLOCK	fcyc.c	/^#define CACHE_BLOCK /;"	d	file:
+CACHE_BYTES	fcyc.c	/^#define CACHE_BYTES /;"	d	file:
+CC	Makefile	/^CC = gcc$/;"	m
+CFLAGS	Makefile	/^CFLAGS = -Wall -O2 -m32 -g03$/;"	m
+CHUNKSIZE	mm.c	/^#define CHUNKSIZE /;"	d	file:
+CLEAR_CACHE	fcyc.c	/^#define CLEAR_CACHE /;"	d	file:
+COMPENSATE	fcyc.c	/^#define COMPENSATE /;"	d	file:
+DEFAULT_TRACEFILES	config.h	/^#define DEFAULT_TRACEFILES /;"	d
+DSIZE	mm.c	/^#define DSIZE /;"	d	file:
+EPSILON	fcyc.c	/^#define EPSILON /;"	d	file:
+FREE	mdriver.c	/^    enum {ALLOC, FREE, REALLOC} type; \/* type of request *\/$/;"	e	enum:__anon19bd20ef0108::__anon19bd20ef0203	file:	access:public
+FTRP	mm.c	/^#define FTRP(/;"	d	file:	signature:(bp)
+GET	mm.c	/^#define GET(/;"	d	file:	signature:(p)
+GET_ALLOC	mm.c	/^#define GET_ALLOC(/;"	d	file:	signature:(p)
+GET_SIZE	mm.c	/^#define GET_SIZE(/;"	d	file:	signature:(p)
+HDRLINES	mdriver.c	/^#define HDRLINES /;"	d	file:
+HDRP	mm.c	/^#define HDRP(/;"	d	file:	signature:(bp)
+IS_ALIGNED	mdriver.c	/^#define IS_ALIGNED(/;"	d	file:	signature:(p)
+K	fcyc.c	/^#define K /;"	d	file:
+KEEP_SAMPLES	fcyc.c	/^#define KEEP_SAMPLES /;"	d	file:
+KEEP_VALS	fcyc.c	/^#define KEEP_VALS /;"	d	file:
+LINENUM	mdriver.c	/^#define LINENUM(/;"	d	file:	signature:(i)
+MAX	mm.c	/^#define MAX(/;"	d	file:	signature:(x,y)
+MAXLINE	mdriver.c	/^#define MAXLINE /;"	d	file:
+MAXSAMPLES	fcyc.c	/^#define MAXSAMPLES /;"	d	file:
+MAX_ETIME	ftimer.c	/^#define MAX_ETIME /;"	d	file:
+MAX_HEAP	config.h	/^#define MAX_HEAP /;"	d
+Mhz	fsecs.c	/^static double Mhz;  \/* estimated CPU clock frequency *\/$/;"	v	typeref:typename:double	file:
+NEVENT	clock.c	/^#define NEVENT /;"	d	file:
+NEXT_BLKP	mm.c	/^#define NEXT_BLKP(/;"	d	file:	signature:(bp)
+OBJS	Makefile	/^OBJS = mdriver.o mm.o memlib.o fsecs.o fcyc.o clock.o ftimer.o$/;"	m
+PACK	mm.c	/^#define PACK(/;"	d	file:	signature:(size,alloc)
+PREV_BLKP	mm.c	/^#define PREV_BLKP(/;"	d	file:	signature:(bp)
+PUT	mm.c	/^#define PUT(/;"	d	file:	signature:(p,val)
+REALLOC	mdriver.c	/^    enum {ALLOC, FREE, REALLOC} type; \/* type of request *\/$/;"	e	enum:__anon19bd20ef0108::__anon19bd20ef0203	file:	access:public
+RECORDTHRESH	clock.c	/^#define RECORDTHRESH /;"	d	file:
+SIZE_T_SIZE	mm.c	/^#define SIZE_T_SIZE /;"	d	file:
+THRESHOLD	clock.c	/^#define THRESHOLD /;"	d	file:
+TRACEDIR	config.h	/^#define TRACEDIR /;"	d
+USE_FCYC	config.h	/^#define USE_FCYC /;"	d
+USE_GETTOD	config.h	/^#define USE_GETTOD /;"	d
+USE_ITIMER	config.h	/^#define USE_ITIMER /;"	d
+UTIL_WEIGHT	config.h	/^#define UTIL_WEIGHT /;"	d
+WSIZE	mm.c	/^#define WSIZE /;"	d	file:
+__CONFIG_H_	config.h	/^#define __CONFIG_H_$/;"	d
+__anon19bd20ef0108	mdriver.c	/^typedef struct {$/;"	s	file:
+__anon19bd20ef0108::ALLOC	mdriver.c	/^    enum {ALLOC, FREE, REALLOC} type; \/* type of request *\/$/;"	e	enum:__anon19bd20ef0108::__anon19bd20ef0203	file:	access:public
+__anon19bd20ef0108::FREE	mdriver.c	/^    enum {ALLOC, FREE, REALLOC} type; \/* type of request *\/$/;"	e	enum:__anon19bd20ef0108::__anon19bd20ef0203	file:	access:public
+__anon19bd20ef0108::REALLOC	mdriver.c	/^    enum {ALLOC, FREE, REALLOC} type; \/* type of request *\/$/;"	e	enum:__anon19bd20ef0108::__anon19bd20ef0203	file:	access:public
+__anon19bd20ef0108::__anon19bd20ef0203	mdriver.c	/^    enum {ALLOC, FREE, REALLOC} type; \/* type of request *\/$/;"	g	struct:__anon19bd20ef0108	file:	access:public
+__anon19bd20ef0108::index	mdriver.c	/^    int index;                        \/* index for free() to use later *\/$/;"	m	struct:__anon19bd20ef0108	typeref:typename:int	file:	access:public
+__anon19bd20ef0108::size	mdriver.c	/^    int size;                         \/* byte size of alloc\/realloc request *\/$/;"	m	struct:__anon19bd20ef0108	typeref:typename:int	file:	access:public
+__anon19bd20ef0108::type	mdriver.c	/^    enum {ALLOC, FREE, REALLOC} type; \/* type of request *\/$/;"	m	struct:__anon19bd20ef0108	typeref:enum:__anon19bd20ef0108::__anon19bd20ef0203	file:	access:public
+__anon19bd20ef0203	mdriver.c	/^    enum {ALLOC, FREE, REALLOC} type; \/* type of request *\/$/;"	g	struct:__anon19bd20ef0108	file:	access:public
+__anon19bd20ef0308	mdriver.c	/^typedef struct {$/;"	s	file:
+__anon19bd20ef0308::block_sizes	mdriver.c	/^    size_t *block_sizes; \/* ... and a corresponding array of payload sizes *\/$/;"	m	struct:__anon19bd20ef0308	typeref:typename:size_t *	file:	access:public
+__anon19bd20ef0308::blocks	mdriver.c	/^    char **blocks;       \/* array of ptrs returned by malloc\/realloc... *\/$/;"	m	struct:__anon19bd20ef0308	typeref:typename:char **	file:	access:public
+__anon19bd20ef0308::num_ids	mdriver.c	/^    int num_ids;         \/* number of alloc\/realloc ids *\/$/;"	m	struct:__anon19bd20ef0308	typeref:typename:int	file:	access:public
+__anon19bd20ef0308::num_ops	mdriver.c	/^    int num_ops;         \/* number of distinct requests *\/$/;"	m	struct:__anon19bd20ef0308	typeref:typename:int	file:	access:public
+__anon19bd20ef0308::ops	mdriver.c	/^    traceop_t *ops;      \/* array of requests *\/$/;"	m	struct:__anon19bd20ef0308	typeref:typename:traceop_t *	file:	access:public
+__anon19bd20ef0308::sugg_heapsize	mdriver.c	/^    int sugg_heapsize;   \/* suggested heap size (unused) *\/$/;"	m	struct:__anon19bd20ef0308	typeref:typename:int	file:	access:public
+__anon19bd20ef0308::weight	mdriver.c	/^    int weight;          \/* weight for this trace (unused) *\/$/;"	m	struct:__anon19bd20ef0308	typeref:typename:int	file:	access:public
+__anon19bd20ef0408	mdriver.c	/^typedef struct {$/;"	s	file:
+__anon19bd20ef0408::ranges	mdriver.c	/^    range_t *ranges;$/;"	m	struct:__anon19bd20ef0408	typeref:typename:range_t *	file:	access:public
+__anon19bd20ef0408::trace	mdriver.c	/^    trace_t *trace;  $/;"	m	struct:__anon19bd20ef0408	typeref:typename:trace_t *	file:	access:public
+__anon19bd20ef0508	mdriver.c	/^typedef struct {$/;"	s	file:
+__anon19bd20ef0508::ops	mdriver.c	/^    double ops;      \/* number of ops (malloc\/free\/realloc) in the trace *\/$/;"	m	struct:__anon19bd20ef0508	typeref:typename:double	file:	access:public
+__anon19bd20ef0508::secs	mdriver.c	/^    double secs;     \/* number of secs needed to run the trace *\/$/;"	m	struct:__anon19bd20ef0508	typeref:typename:double	file:	access:public
+__anon19bd20ef0508::util	mdriver.c	/^    double util;     \/* space utilization for this trace (always 0 for libc) *\/$/;"	m	struct:__anon19bd20ef0508	typeref:typename:double	file:	access:public
+__anon19bd20ef0508::valid	mdriver.c	/^    int valid;       \/* was the trace processed correctly by the allocator? *\/$/;"	m	struct:__anon19bd20ef0508	typeref:typename:int	file:	access:public
+__anon7c9aaad50108	mm.h	/^typedef struct {$/;"	s
+__anon7c9aaad50108::id1	mm.h	/^    char *id1;      \/* login ID of first member *\/$/;"	m	struct:__anon7c9aaad50108	typeref:typename:char *	access:public
+__anon7c9aaad50108::id2	mm.h	/^    char *id2;      \/* login ID of second member *\/$/;"	m	struct:__anon7c9aaad50108	typeref:typename:char *	access:public
+__anon7c9aaad50108::name1	mm.h	/^    char *name1;    \/* full name of first member *\/$/;"	m	struct:__anon7c9aaad50108	typeref:typename:char *	access:public
+__anon7c9aaad50108::name2	mm.h	/^    char *name2;    \/* full name of second member (if any) *\/$/;"	m	struct:__anon7c9aaad50108	typeref:typename:char *	access:public
+__anon7c9aaad50108::teamname	mm.h	/^    char *teamname; \/* ID1+ID2 or ID1 *\/$/;"	m	struct:__anon7c9aaad50108	typeref:typename:char *	access:public
+access_counter	clock.c	/^void access_counter(unsigned *hi, unsigned *lo)$/;"	f	typeref:typename:void	signature:(unsigned * hi,unsigned * lo)
+add_range	mdriver.c	/^static int add_range(range_t **ranges, char *lo, int size, $/;"	f	typeref:typename:int	file:	signature:(range_t ** ranges,char * lo,int size,int tracenum,int opnum)
+add_range	mdriver.c	/^static int add_range(range_t **ranges, char *lo, int size, $/;"	p	typeref:typename:int	file:	signature:(range_t ** ranges,char * lo,int size,int tracenum,int opnum)
+add_sample	fcyc.c	/^static void add_sample(double val)$/;"	f	typeref:typename:void	file:	signature:(double val)
+app_error	mdriver.c	/^static void app_error(char *msg);$/;"	p	typeref:typename:void	file:	signature:(char * msg)
+app_error	mdriver.c	/^void app_error(char *msg) $/;"	f	typeref:typename:void	signature:(char * msg)
+block_sizes	mdriver.c	/^    size_t *block_sizes; \/* ... and a corresponding array of payload sizes *\/$/;"	m	struct:__anon19bd20ef0308	typeref:typename:size_t *	file:	access:public
+blocks	mdriver.c	/^    char **blocks;       \/* array of ptrs returned by malloc\/realloc... *\/$/;"	m	struct:__anon19bd20ef0308	typeref:typename:char **	file:	access:public
+cache_block	fcyc.c	/^static int cache_block = CACHE_BLOCK;$/;"	v	typeref:typename:int	file:
+cache_buf	fcyc.c	/^static int *cache_buf = NULL;$/;"	v	typeref:typename:int *	file:
+cache_bytes	fcyc.c	/^static int cache_bytes = CACHE_BYTES;$/;"	v	typeref:typename:int	file:
+callibrate	clock.c	/^static void callibrate(int verbose)$/;"	f	typeref:typename:void	file:	signature:(int verbose)
+clean	Makefile	/^clean:$/;"	t
+clear	fcyc.c	/^static void clear()$/;"	f	typeref:typename:void	file:	signature:()
+clear_cache	fcyc.c	/^static int clear_cache = CLEAR_CACHE;$/;"	v	typeref:typename:int	file:
+clear_ranges	mdriver.c	/^static void clear_ranges(range_t **ranges)$/;"	f	typeref:typename:void	file:	signature:(range_t ** ranges)
+clear_ranges	mdriver.c	/^static void clear_ranges(range_t **ranges);$/;"	p	typeref:typename:void	file:	signature:(range_t ** ranges)
+clock.o	Makefile	/^clock.o: clock.c clock.h$/;"	t
+coalesce	mm.c	/^static void *coalesce(void *bp) {$/;"	f	typeref:typename:void *	file:	signature:(void * bp)
+compensate	fcyc.c	/^static int compensate = COMPENSATE;$/;"	v	typeref:typename:int	file:
+counter	clock.c	/^static unsigned int (*counter)(void)= (void *)counterRoutine;$/;"	v	typeref:typename:unsigned int (*)(void)	file:
+counterRoutine	clock.c	/^static unsigned int counterRoutine[] =$/;"	v	typeref:typename:unsigned int[]	file:
+cyc_hi	clock.c	/^static unsigned cyc_hi = 0;$/;"	v	typeref:typename:unsigned	file:
+cyc_lo	clock.c	/^static unsigned cyc_lo = 0;$/;"	v	typeref:typename:unsigned	file:
+cyc_per_tick	clock.c	/^static double cyc_per_tick = 0.0;$/;"	v	typeref:typename:double	file:
+default_tracefiles	mdriver.c	/^static char *default_tracefiles[] = {  $/;"	v	typeref:typename:char * []	file:
+epsilon	fcyc.c	/^static double epsilon = EPSILON;$/;"	v	typeref:typename:double	file:
+errors	mdriver.c	/^static int errors = 0;  \/* number of errs found when running student malloc *\/$/;"	v	typeref:typename:int	file:
+eval_libc_speed	mdriver.c	/^static void eval_libc_speed(void *ptr)$/;"	f	typeref:typename:void	file:	signature:(void * ptr)
+eval_libc_speed	mdriver.c	/^static void eval_libc_speed(void *ptr);$/;"	p	typeref:typename:void	file:	signature:(void * ptr)
+eval_libc_valid	mdriver.c	/^static int eval_libc_valid(trace_t *trace, int tracenum)$/;"	f	typeref:typename:int	file:	signature:(trace_t * trace,int tracenum)
+eval_libc_valid	mdriver.c	/^static int eval_libc_valid(trace_t *trace, int tracenum);$/;"	p	typeref:typename:int	file:	signature:(trace_t * trace,int tracenum)
+eval_mm_speed	mdriver.c	/^static void eval_mm_speed(void *ptr)$/;"	f	typeref:typename:void	file:	signature:(void * ptr)
+eval_mm_speed	mdriver.c	/^static void eval_mm_speed(void *ptr);$/;"	p	typeref:typename:void	file:	signature:(void * ptr)
+eval_mm_util	mdriver.c	/^static double eval_mm_util(trace_t *trace, int tracenum, range_t **ranges)$/;"	f	typeref:typename:double	file:	signature:(trace_t * trace,int tracenum,range_t ** ranges)
+eval_mm_util	mdriver.c	/^static double eval_mm_util(trace_t *trace, int tracenum, range_t **ranges);$/;"	p	typeref:typename:double	file:	signature:(trace_t * trace,int tracenum,range_t ** ranges)
+eval_mm_valid	mdriver.c	/^static int eval_mm_valid(trace_t *trace, int tracenum, range_t **ranges) $/;"	f	typeref:typename:int	file:	signature:(trace_t * trace,int tracenum,range_t ** ranges)
+eval_mm_valid	mdriver.c	/^static int eval_mm_valid(trace_t *trace, int tracenum, range_t **ranges);$/;"	p	typeref:typename:int	file:	signature:(trace_t * trace,int tracenum,range_t ** ranges)
+extend_heap	mm.c	/^static void *extend_heap(size_t words)$/;"	f	typeref:typename:void *	file:	signature:(size_t words)
+fcyc	fcyc.c	/^double fcyc(test_funct f, void *argp)$/;"	f	typeref:typename:double	signature:(test_funct f,void * argp)
+fcyc	fcyc.h	/^double fcyc(test_funct f, void* argp);$/;"	p	typeref:typename:double	signature:(test_funct f,void * argp)
+fcyc.o	Makefile	/^fcyc.o: fcyc.c fcyc.h$/;"	t
+find_fit	mm.c	/^static void *find_fit(size_t asize)$/;"	f	typeref:typename:void *	file:	signature:(size_t asize)
+first_p	ftimer.c	/^static struct itimerval first_p; \/* prof time*\/$/;"	v	typeref:struct:itimerval	file:
+first_r	ftimer.c	/^static struct itimerval first_r; \/* real time *\/$/;"	v	typeref:struct:itimerval	file:
+first_u	ftimer.c	/^static struct itimerval first_u; \/* user time *\/$/;"	v	typeref:struct:itimerval	file:
+free_trace	mdriver.c	/^static void free_trace(trace_t *trace);$/;"	p	typeref:typename:void	file:	signature:(trace_t * trace)
+free_trace	mdriver.c	/^void free_trace(trace_t *trace)$/;"	f	typeref:typename:void	signature:(trace_t * trace)
+fsecs	fsecs.c	/^double fsecs(fsecs_test_funct f, void *argp) $/;"	f	typeref:typename:double	signature:(fsecs_test_funct f,void * argp)
+fsecs	fsecs.h	/^double fsecs(fsecs_test_funct f, void *argp);$/;"	p	typeref:typename:double	signature:(fsecs_test_funct f,void * argp)
+fsecs.o	Makefile	/^fsecs.o: fsecs.c fsecs.h config.h$/;"	t
+fsecs_test_funct	fsecs.h	/^typedef void (*fsecs_test_funct)(void *);$/;"	t	typeref:typename:void (*)(void *)
+ftimer.o	Makefile	/^ftimer.o: ftimer.c ftimer.h config.h$/;"	t
+ftimer_gettod	ftimer.c	/^double ftimer_gettod(ftimer_test_funct f, void *argp, int n)$/;"	f	typeref:typename:double	signature:(ftimer_test_funct f,void * argp,int n)
+ftimer_gettod	ftimer.h	/^double ftimer_gettod(ftimer_test_funct f, void *argp, int n);$/;"	p	typeref:typename:double	signature:(ftimer_test_funct f,void * argp,int n)
+ftimer_itimer	ftimer.c	/^double ftimer_itimer(ftimer_test_funct f, void *argp, int n)$/;"	f	typeref:typename:double	signature:(ftimer_test_funct f,void * argp,int n)
+ftimer_itimer	ftimer.h	/^double ftimer_itimer(ftimer_test_funct f, void *argp, int n);$/;"	p	typeref:typename:double	signature:(ftimer_test_funct f,void * argp,int n)
+ftimer_test_funct	ftimer.h	/^typedef void (*ftimer_test_funct)(void *); $/;"	t	typeref:typename:void (*)(void *)
+get_comp_counter	clock.c	/^double get_comp_counter() $/;"	f	typeref:typename:double	signature:()
+get_comp_counter	clock.h	/^double get_comp_counter();$/;"	p	typeref:typename:double	signature:()
+get_counter	clock.c	/^double get_counter() $/;"	f	typeref:typename:double	signature:()
+get_counter	clock.c	/^double get_counter()$/;"	f	typeref:typename:double	signature:()
+get_counter	clock.h	/^double get_counter();$/;"	p	typeref:typename:double	signature:()
+get_etime	ftimer.c	/^static double get_etime(void) {$/;"	f	typeref:typename:double	file:	signature:(void)
+get_etime	ftimer.c	/^static double get_etime(void);$/;"	p	typeref:typename:double	file:	signature:(void)
+has_converged	fcyc.c	/^static int has_converged()$/;"	f	typeref:typename:int	file:	signature:()
+heap_listp	mm.c	/^static char *heap_listp;$/;"	v	typeref:typename:char *	file:
+hi	mdriver.c	/^    char *hi;              \/* high payload address *\/$/;"	m	struct:range_t	typeref:typename:char *	file:	access:public
+id1	mm.h	/^    char *id1;      \/* login ID of first member *\/$/;"	m	struct:__anon7c9aaad50108	typeref:typename:char *	access:public
+id2	mm.h	/^    char *id2;      \/* login ID of second member *\/$/;"	m	struct:__anon7c9aaad50108	typeref:typename:char *	access:public
+index	mdriver.c	/^    int index;                        \/* index for free() to use later *\/$/;"	m	struct:__anon19bd20ef0108	typeref:typename:int	file:	access:public
+init_etime	ftimer.c	/^static void init_etime(void)$/;"	f	typeref:typename:void	file:	signature:(void)
+init_etime	ftimer.c	/^static void init_etime(void);$/;"	p	typeref:typename:void	file:	signature:(void)
+init_fsecs	fsecs.c	/^void init_fsecs(void)$/;"	f	typeref:typename:void	signature:(void)
+init_fsecs	fsecs.h	/^void init_fsecs(void);$/;"	p	typeref:typename:void	signature:(void)
+init_sampler	fcyc.c	/^static void init_sampler()$/;"	f	typeref:typename:void	file:	signature:()
+kbest	fcyc.c	/^static int kbest = K;$/;"	v	typeref:typename:int	file:
+lo	mdriver.c	/^    char *lo;              \/* low payload address *\/$/;"	m	struct:range_t	typeref:typename:char *	file:	access:public
+main	mdriver.c	/^int main(int argc, char **argv)$/;"	f	typeref:typename:int	signature:(int argc,char ** argv)
+malloc_error	mdriver.c	/^static void malloc_error(int tracenum, int opnum, char *msg);$/;"	p	typeref:typename:void	file:	signature:(int tracenum,int opnum,char * msg)
+malloc_error	mdriver.c	/^void malloc_error(int tracenum, int opnum, char *msg)$/;"	f	typeref:typename:void	signature:(int tracenum,int opnum,char * msg)
+maxsamples	fcyc.c	/^static int maxsamples = MAXSAMPLES;$/;"	v	typeref:typename:int	file:
+mdriver	Makefile	/^mdriver: $(OBJS)$/;"	t
+mdriver.o	Makefile	/^mdriver.o: mdriver.c fsecs.h fcyc.h clock.h memlib.h config.h mm.h$/;"	t
+mem_brk	memlib.c	/^static char *mem_brk;        \/* points to last byte of heap *\/$/;"	v	typeref:typename:char *	file:
+mem_deinit	memlib.c	/^void mem_deinit(void)$/;"	f	typeref:typename:void	signature:(void)
+mem_deinit	memlib.h	/^void mem_deinit(void);$/;"	p	typeref:typename:void	signature:(void)
+mem_heap_hi	memlib.c	/^void *mem_heap_hi()$/;"	f	typeref:typename:void *	signature:()
+mem_heap_hi	memlib.h	/^void *mem_heap_hi(void);$/;"	p	typeref:typename:void *	signature:(void)
+mem_heap_lo	memlib.c	/^void *mem_heap_lo()$/;"	f	typeref:typename:void *	signature:()
+mem_heap_lo	memlib.h	/^void *mem_heap_lo(void);$/;"	p	typeref:typename:void *	signature:(void)
+mem_heapsize	memlib.c	/^size_t mem_heapsize() $/;"	f	typeref:typename:size_t	signature:()
+mem_heapsize	memlib.h	/^size_t mem_heapsize(void);$/;"	p	typeref:typename:size_t	signature:(void)
+mem_init	memlib.c	/^void mem_init(void)$/;"	f	typeref:typename:void	signature:(void)
+mem_init	memlib.h	/^void mem_init(void);               $/;"	p	typeref:typename:void	signature:(void)
+mem_max_addr	memlib.c	/^static char *mem_max_addr;   \/* largest legal heap address *\/ $/;"	v	typeref:typename:char *	file:
+mem_pagesize	memlib.c	/^size_t mem_pagesize()$/;"	f	typeref:typename:size_t	signature:()
+mem_pagesize	memlib.h	/^size_t mem_pagesize(void);$/;"	p	typeref:typename:size_t	signature:(void)
+mem_reset_brk	memlib.c	/^void mem_reset_brk()$/;"	f	typeref:typename:void	signature:()
+mem_reset_brk	memlib.h	/^void mem_reset_brk(void); $/;"	p	typeref:typename:void	signature:(void)
+mem_sbrk	memlib.c	/^void *mem_sbrk(int incr) $/;"	f	typeref:typename:void *	signature:(int incr)
+mem_sbrk	memlib.h	/^void *mem_sbrk(int incr);$/;"	p	typeref:typename:void *	signature:(int incr)
+mem_start_brk	memlib.c	/^static char *mem_start_brk;  \/* points to first byte of heap *\/$/;"	v	typeref:typename:char *	file:
+memlib.o	Makefile	/^memlib.o: memlib.c memlib.h$/;"	t
+mhz	clock.c	/^double mhz(int verbose)$/;"	f	typeref:typename:double	signature:(int verbose)
+mhz	clock.h	/^double mhz(int verbose);$/;"	p	typeref:typename:double	signature:(int verbose)
+mhz_full	clock.c	/^double mhz_full(int verbose, int sleeptime)$/;"	f	typeref:typename:double	signature:(int verbose,int sleeptime)
+mhz_full	clock.h	/^double mhz_full(int verbose, int sleeptime);$/;"	p	typeref:typename:double	signature:(int verbose,int sleeptime)
+mm.o	Makefile	/^mm.o: mm.c mm.h memlib.h$/;"	t
+mm_free	mm.c	/^void mm_free(void *ptr)$/;"	f	typeref:typename:void	signature:(void * ptr)
+mm_free	mm.h	/^extern void mm_free (void *ptr);$/;"	p	typeref:typename:void	signature:(void * ptr)
+mm_init	mm.c	/^int mm_init(void)$/;"	f	typeref:typename:int	signature:(void)
+mm_init	mm.h	/^extern int mm_init (void);$/;"	p	typeref:typename:int	signature:(void)
+mm_malloc	mm.c	/^void *mm_malloc(size_t size)$/;"	f	typeref:typename:void *	signature:(size_t size)
+mm_malloc	mm.h	/^extern void *mm_malloc (size_t size);$/;"	p	typeref:typename:void *	signature:(size_t size)
+mm_realloc	mm.c	/^void *mm_realloc(void *ptr, size_t size)$/;"	f	typeref:typename:void *	signature:(void * ptr,size_t size)
+mm_realloc	mm.h	/^extern void *mm_realloc(void *ptr, size_t size);$/;"	p	typeref:typename:void *	signature:(void * ptr,size_t size)
+msg	mdriver.c	/^char msg[MAXLINE];      \/* for whenever we need to compose an error message *\/$/;"	v	typeref:typename:char[]
+name1	mm.h	/^    char *name1;    \/* full name of first member *\/$/;"	m	struct:__anon7c9aaad50108	typeref:typename:char *	access:public
+name2	mm.h	/^    char *name2;    \/* full name of second member (if any) *\/$/;"	m	struct:__anon7c9aaad50108	typeref:typename:char *	access:public
+next	mdriver.c	/^    struct range_t *next;  \/* next list element *\/$/;"	m	struct:range_t	typeref:struct:range_t *	file:	access:public
+num_ids	mdriver.c	/^    int num_ids;         \/* number of alloc\/realloc ids *\/$/;"	m	struct:__anon19bd20ef0308	typeref:typename:int	file:	access:public
+num_ops	mdriver.c	/^    int num_ops;         \/* number of distinct requests *\/$/;"	m	struct:__anon19bd20ef0308	typeref:typename:int	file:	access:public
+ops	mdriver.c	/^    double ops;      \/* number of ops (malloc\/free\/realloc) in the trace *\/$/;"	m	struct:__anon19bd20ef0508	typeref:typename:double	file:	access:public
+ops	mdriver.c	/^    traceop_t *ops;      \/* array of requests *\/$/;"	m	struct:__anon19bd20ef0308	typeref:typename:traceop_t *	file:	access:public
+ovhd	clock.c	/^double ovhd()$/;"	f	typeref:typename:double	signature:()
+ovhd	clock.h	/^double ovhd();$/;"	p	typeref:typename:double	signature:()
+place	mm.c	/^static void place(void *bp, size_t asize)$/;"	f	typeref:typename:void	file:	signature:(void * bp,size_t asize)
+printresults	mdriver.c	/^static void printresults(int n, stats_t *stats) $/;"	f	typeref:typename:void	file:	signature:(int n,stats_t * stats)
+printresults	mdriver.c	/^static void printresults(int n, stats_t *stats);$/;"	p	typeref:typename:void	file:	signature:(int n,stats_t * stats)
+range_t	mdriver.c	/^typedef struct range_t {$/;"	s	file:
+range_t	mdriver.c	/^} range_t;$/;"	t	typeref:struct:range_t	file:
+range_t::hi	mdriver.c	/^    char *hi;              \/* high payload address *\/$/;"	m	struct:range_t	typeref:typename:char *	file:	access:public
+range_t::lo	mdriver.c	/^    char *lo;              \/* low payload address *\/$/;"	m	struct:range_t	typeref:typename:char *	file:	access:public
+range_t::next	mdriver.c	/^    struct range_t *next;  \/* next list element *\/$/;"	m	struct:range_t	typeref:struct:range_t *	file:	access:public
+ranges	mdriver.c	/^    range_t *ranges;$/;"	m	struct:__anon19bd20ef0408	typeref:typename:range_t *	file:	access:public
+read_trace	mdriver.c	/^static trace_t *read_trace(char *tracedir, char *filename)$/;"	f	typeref:typename:trace_t *	file:	signature:(char * tracedir,char * filename)
+read_trace	mdriver.c	/^static trace_t *read_trace(char *tracedir, char *filename);$/;"	p	typeref:typename:trace_t *	file:	signature:(char * tracedir,char * filename)
+remove_range	mdriver.c	/^static void remove_range(range_t **ranges, char *lo)$/;"	f	typeref:typename:void	file:	signature:(range_t ** ranges,char * lo)
+remove_range	mdriver.c	/^static void remove_range(range_t **ranges, char *lo);$/;"	p	typeref:typename:void	file:	signature:(range_t ** ranges,char * lo)
+samplecount	fcyc.c	/^static int samplecount = 0;$/;"	v	typeref:typename:int	file:
+samples	fcyc.c	/^static double *samples = NULL;$/;"	v	typeref:typename:double *	file:
+secs	mdriver.c	/^    double secs;     \/* number of secs needed to run the trace *\/$/;"	m	struct:__anon19bd20ef0508	typeref:typename:double	file:	access:public
+set_fcyc_cache_block	fcyc.c	/^void set_fcyc_cache_block(int bytes) {$/;"	f	typeref:typename:void	signature:(int bytes)
+set_fcyc_cache_block	fcyc.h	/^void set_fcyc_cache_block(int bytes);$/;"	p	typeref:typename:void	signature:(int bytes)
+set_fcyc_cache_size	fcyc.c	/^void set_fcyc_cache_size(int bytes)$/;"	f	typeref:typename:void	signature:(int bytes)
+set_fcyc_cache_size	fcyc.h	/^void set_fcyc_cache_size(int bytes);$/;"	p	typeref:typename:void	signature:(int bytes)
+set_fcyc_clear_cache	fcyc.c	/^void set_fcyc_clear_cache(int clear)$/;"	f	typeref:typename:void	signature:(int clear)
+set_fcyc_clear_cache	fcyc.h	/^void set_fcyc_clear_cache(int clear);$/;"	p	typeref:typename:void	signature:(int clear)
+set_fcyc_compensate	fcyc.c	/^void set_fcyc_compensate(int compensate_arg)$/;"	f	typeref:typename:void	signature:(int compensate_arg)
+set_fcyc_compensate	fcyc.h	/^void set_fcyc_compensate(int compensate_arg);$/;"	p	typeref:typename:void	signature:(int compensate_arg)
+set_fcyc_epsilon	fcyc.c	/^void set_fcyc_epsilon(double epsilon_arg)$/;"	f	typeref:typename:void	signature:(double epsilon_arg)
+set_fcyc_epsilon	fcyc.h	/^void set_fcyc_epsilon(double epsilon_arg);$/;"	p	typeref:typename:void	signature:(double epsilon_arg)
+set_fcyc_k	fcyc.c	/^void set_fcyc_k(int k)$/;"	f	typeref:typename:void	signature:(int k)
+set_fcyc_k	fcyc.h	/^void set_fcyc_k(int k);$/;"	p	typeref:typename:void	signature:(int k)
+set_fcyc_maxsamples	fcyc.c	/^void set_fcyc_maxsamples(int maxsamples_arg)$/;"	f	typeref:typename:void	signature:(int maxsamples_arg)
+set_fcyc_maxsamples	fcyc.h	/^void set_fcyc_maxsamples(int maxsamples_arg);$/;"	p	typeref:typename:void	signature:(int maxsamples_arg)
+sink	fcyc.c	/^static volatile int sink = 0;$/;"	v	typeref:typename:volatile int	file:
+size	mdriver.c	/^    int size;                         \/* byte size of alloc\/realloc request *\/$/;"	m	struct:__anon19bd20ef0108	typeref:typename:int	file:	access:public
+speed_t	mdriver.c	/^} speed_t;$/;"	t	typeref:struct:__anon19bd20ef0408	file:
+start_comp_counter	clock.c	/^void start_comp_counter() $/;"	f	typeref:typename:void	signature:()
+start_comp_counter	clock.h	/^void start_comp_counter();$/;"	p	typeref:typename:void	signature:()
+start_counter	clock.c	/^void start_counter()$/;"	f	typeref:typename:void	signature:()
+start_counter	clock.h	/^void start_counter();$/;"	p	typeref:typename:void	signature:()
+start_tick	clock.c	/^static clock_t start_tick = 0;$/;"	v	typeref:typename:clock_t	file:
+stats_t	mdriver.c	/^} stats_t; $/;"	t	typeref:struct:__anon19bd20ef0508	file:
+sugg_heapsize	mdriver.c	/^    int sugg_heapsize;   \/* suggested heap size (unused) *\/$/;"	m	struct:__anon19bd20ef0308	typeref:typename:int	file:	access:public
+team	mm.c	/^team_t team = {$/;"	v	typeref:typename:team_t
+team_t	mm.h	/^} team_t;$/;"	t	typeref:struct:__anon7c9aaad50108
+teamname	mm.h	/^    char *teamname; \/* ID1+ID2 or ID1 *\/$/;"	m	struct:__anon7c9aaad50108	typeref:typename:char *	access:public
+test_funct	fcyc.h	/^typedef void (*test_funct)(void *);$/;"	t	typeref:typename:void (*)(void *)
+trace	mdriver.c	/^    trace_t *trace;  $/;"	m	struct:__anon19bd20ef0408	typeref:typename:trace_t *	file:	access:public
+trace_t	mdriver.c	/^} trace_t;$/;"	t	typeref:struct:__anon19bd20ef0308	file:
+tracedir	mdriver.c	/^static char tracedir[MAXLINE] = TRACEDIR;$/;"	v	typeref:typename:char[]	file:
+traceop_t	mdriver.c	/^} traceop_t;$/;"	t	typeref:struct:__anon19bd20ef0108	file:
+type	mdriver.c	/^    enum {ALLOC, FREE, REALLOC} type; \/* type of request *\/$/;"	m	struct:__anon19bd20ef0108	typeref:enum:__anon19bd20ef0108::__anon19bd20ef0203	file:	access:public
+unix_error	mdriver.c	/^static void unix_error(char *msg);$/;"	p	typeref:typename:void	file:	signature:(char * msg)
+unix_error	mdriver.c	/^void unix_error(char *msg) $/;"	f	typeref:typename:void	signature:(char * msg)
+usage	mdriver.c	/^static void usage(void) $/;"	f	typeref:typename:void	file:	signature:(void)
+usage	mdriver.c	/^static void usage(void);$/;"	p	typeref:typename:void	file:	signature:(void)
+util	mdriver.c	/^    double util;     \/* space utilization for this trace (always 0 for libc) *\/$/;"	m	struct:__anon19bd20ef0508	typeref:typename:double	file:	access:public
+valid	mdriver.c	/^    int valid;       \/* was the trace processed correctly by the allocator? *\/$/;"	m	struct:__anon19bd20ef0508	typeref:typename:int	file:	access:public
+values	fcyc.c	/^static double *values = NULL;$/;"	v	typeref:typename:double *	file:
+verbose	mdriver.c	/^int verbose = 0;        \/* global flag for verbose output *\/$/;"	v	typeref:typename:int
+weight	mdriver.c	/^    int weight;          \/* weight for this trace (unused) *\/$/;"	m	struct:__anon19bd20ef0308	typeref:typename:int	file:	access:public
diff --git a/mdriver b/mdriver
new file mode 100755
index 0000000..a1d43d7
Binary files /dev/null and b/mdriver differ
diff --git a/mm.c b/mm.c
index 3c2e695..70c7e2e 100644
--- a/mm.c
+++ b/mm.c
@@ -41,38 +41,182 @@ team_t team = {
 /* rounds up to the nearest multiple of ALIGNMENT */
 #define ALIGN(size) (((size) + (ALIGNMENT-1)) & ~0x7)
 
-
 #define SIZE_T_SIZE (ALIGN(sizeof(size_t)))
 
+/* Page 830, Pearson R. Bryant – D. O’Hallaron. Computer Systems: A Programmer’s Perspective.3rd Edition, Pearson, 2003. */
+/* Basic constants and macros */
+#define WSIZE 4 /* Word and header/footer size (bytes) */
+#define DSIZE 8 /* Double word size (bytes) */
+#define CHUNKSIZE (1<<12) /* Extend heap by this amount (bytes) */
+
+#define MAX(x, y) ((x) > (y)? (x) : (y))
+
+/* Pack a size and allocated bit into a word */
+#define PACK(size, alloc) ((size) | (alloc))
+
+/* Read and write a word at address p */
+#define GET(p) (*(unsigned int *)(p))
+#define PUT(p, val) (*(unsigned int *)(p) = (val))
+
+/* Read the size and allocated fields from address p */
+#define GET_SIZE(p) (GET(p) & ~0x7)
+#define GET_ALLOC(p) (GET(p) & 0x1)
+
+/* Given block ptr bp, compute address of its header and footer */
+#define HDRP(bp) ((char *)(bp) - WSIZE)
+#define FTRP(bp) ((char *)(bp) + GET_SIZE(HDRP(bp)) - DSIZE)
+
+/* Given block ptr bp, compute address of next and previous blocks */
+#define NEXT_BLKP(bp) ((char *)(bp) + GET_SIZE(((char *)(bp) - WSIZE)))
+#define PREV_BLKP(bp) ((char *)(bp) - GET_SIZE(((char *)(bp) - DSIZE)))
+
+static char *heap_listp;
+
+/* Page 856-858, Pearson R. Bryant – D. O’Hallaron. Computer Systems: A Programmer’s Perspective.3rd Edition, Pearson, 2003. */
+static void place(void *bp, size_t asize)
+{
+  size_t csize = GET_SIZE(HDRP(bp));
+  if ((csize - asize) >= (2*DSIZE)) {
+    PUT(HDRP(bp), PACK(asize, 1));
+    PUT(FTRP(bp), PACK(asize, 1));
+    bp = NEXT_BLKP(bp);
+    PUT(HDRP(bp), PACK(csize-asize, 0));
+    PUT(FTRP(bp), PACK(csize-asize, 0));
+  }
+  else {
+    PUT(HDRP(bp), PACK(csize, 1));
+    PUT(FTRP(bp), PACK(csize, 1));
+  }
+}
+
+/* Page 856, Pearson R. Bryant – D. O’Hallaron. Computer Systems: A Programmer’s Perspective.3rd Edition, Pearson, 2003. */
+static void *find_fit(size_t asize)
+{
+  /* First fit search */
+  void *bp;
+
+  for (bp = heap_listp; GET_SIZE(HDRP(bp)) > 0; bp = NEXT_BLKP(bp)) {
+    if (!GET_ALLOC(HDRP(bp)) && (asize <= GET_SIZE(HDRP(bp)))) {
+      return bp;
+    }
+  }
+  return NULL; /* No fit */
+}
+
+/* Page 833, Pearson R. Bryant – D. O’Hallaron. Computer Systems: A Programmer’s Perspective.3rd Edition, Pearson, 2003. */
+static void *coalesce(void *bp) {
+  size_t prev_alloc = GET_ALLOC(FTRP(PREV_BLKP(bp)));
+  size_t next_alloc = GET_ALLOC(HDRP(NEXT_BLKP(bp)));
+  size_t size = GET_SIZE(HDRP(bp));
+
+  if (prev_alloc && next_alloc) {                /* Case 1 */
+    return bp;
+  } else if (prev_alloc && !next_alloc) {        /* Case 2 */
+    size += GET_SIZE(HDRP(NEXT_BLKP(bp)));
+    PUT(HDRP(bp),PACK(size,0));
+    PUT(FTRP(bp),PACK(size,0));
+  } else if (!prev_alloc && next_alloc) {        /* Case 3 */
+    size += GET_SIZE(HDRP(PREV_BLKP(bp)));
+    PUT(FTRP(bp), PACK(size, 0));
+    PUT(HDRP(PREV_BLKP(bp)), PACK(size, 0));
+    bp = PREV_BLKP(bp);
+  } else {                                       /* Case 4 */
+    size += GET_SIZE(HDRP(PREV_BLKP(bp))) +
+      GET_SIZE(FTRP(NEXT_BLKP(bp)));
+    PUT(HDRP(PREV_BLKP(bp)), PACK(size, 0));
+    PUT(FTRP(NEXT_BLKP(bp)), PACK(size, 0));
+    bp = PREV_BLKP(bp);
+  }
+  return bp;
+}
+
+/* Page 831, Pearson R. Bryant – D. O’Hallaron. Computer Systems: A Programmer’s Perspective.3rd Edition, Pearson, 2003. */
+static void *extend_heap(size_t words)
+{
+  char *bp;
+  size_t size;
+
+  /* Allocate an even number of words to maintain alignment */
+  size = (words % 2) ? (words+1) * WSIZE : words * WSIZE;
+  if ((long)(bp = mem_sbrk(size)) == -1)
+    return NULL;
+
+  /* Initialize free block header/footer and the epilogue header */
+  PUT(HDRP(bp), PACK(size,0)); /* Free block header */
+  PUT(FTRP(bp), PACK(size,0)); /* Free block footer */
+  PUT(HDRP(NEXT_BLKP(bp)), PACK(0, 1)); /* New epilogue header */
+
+  /* Coalesce if the previous block was free */
+  return coalesce(bp);
+}
+
+
+/* Page 831, Pearson R. Bryant – D. O’Hallaron. Computer Systems: A Programmer’s Perspective.3rd Edition, Pearson, 2003. */
 /*
  * mm_init - initialize the malloc package.
  */
 int mm_init(void)
 {
+  /* Create the initial empty heap */
+  if ((heap_listp = mem_sbrk(4*WSIZE)) == (void *)-1)
+    return -1;
+  PUT(heap_listp, 0); /* Alignment padding */
+  PUT(heap_listp + (1*WSIZE), PACK(DSIZE, 1)); /* Prologue header */
+  PUT(heap_listp + (2*WSIZE), PACK(DSIZE, 1)); /* Prologue footer */
+  PUT(heap_listp + (3*WSIZE), PACK(0, 1));   /* Epilogue header */
+  heap_listp += (2*WSIZE);
+
+  /* Extend the empty heap with a free block of CHUNKSIZE bytes */
+  if (extend_heap(CHUNKSIZE/WSIZE) == NULL)
+    return -1;
   return 0;
 }
 
+/* Page 834, Pearson R. Bryant – D. O’Hallaron. Computer Systems: A Programmer’s Perspective.3rd Edition, Pearson, 2003. */
 /*
  * mm_malloc - Allocate a block by incrementing the brk pointer.
  *     Always allocate a block whose size is a multiple of the alignment.
  */
 void *mm_malloc(size_t size)
 {
-  int newsize = ALIGN(size + SIZE_T_SIZE);
-  void *p = mem_sbrk(newsize);
-  if (p == (void *)-1)
+  size_t asize;
+  /* Adjusted block size */
+  size_t extendsize; /* Amount to extend heap if no fit */
+  char *bp;
+
+  /* Ignore spurious requests */
+  if (size == 0)
     return NULL;
-  else {
-    *(size_t *)p = size;
-    return (void *)((char *)p + SIZE_T_SIZE);
+
+  /* Adjust block size to include overhead and alignment reqs. */
+  if (size <= DSIZE)
+    asize = 2*DSIZE;
+  else
+    asize = DSIZE * ((size + (DSIZE) + (DSIZE-1)) / DSIZE);
+  /* Search the free list for a fit */
+  if ((bp = find_fit(asize)) != NULL) {
+    place(bp, asize);
+    return bp;
   }
+
+  /* No fit found. Get more memory and place the block */
+  extendsize = MAX(asize,CHUNKSIZE);
+  if ((bp = extend_heap(extendsize/WSIZE)) == NULL)
+    return NULL;
+  place(bp, asize);
+  return bp;
 }
 
+/* Page 833, Pearson R. Bryant – D. O’Hallaron. Computer Systems: A Programmer’s Perspective.3rd Edition, Pearson, 2003. */
 /*
  * mm_free - Freeing a block does nothing.
  */
 void mm_free(void *ptr)
 {
+  size_t size= GET_SIZE(HDRP(ptr));
+  PUT(HDRP(ptr), PACK(size, 0));
+  PUT(FTRP(ptr), PACK(size, 0));
+  coalesce(ptr);
 }
 
 /*
@@ -97,3 +241,8 @@ void *mm_realloc(void *ptr, size_t size)
   mm_free(oldptr);
   return newptr;
 }
+
+////////////////////////////////////////////////////////////////
+/// Helper Functions
+////////////////////////////////////////////////////////////////
+