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author | Martin Liska <mliska@suse.cz> | 2015-05-27 14:47:22 +0200 |
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committer | Martin Liska <marxin@gcc.gnu.org> | 2015-05-27 12:47:22 +0000 |
commit | 2d44c7dea7c8d2917eec28a5e08e8f405aad8c3e (patch) | |
tree | 4505b8171553fd7e780bb28532a4986cd72b6f4f /gcc/mem-stats.h | |
parent | 151fbaac5c78c4e9b749fc9e916f78b0ba63b153 (diff) | |
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New memory allocation statistics infrastructure.
* Makefile.in: Add additional dependencies related to memory report
enhancement.
* alloc-pool.c (allocate_pool_descriptor): Use new ctor.
* bitmap.c (struct bitmap_descriptor_d): Remove.
(struct loc): Likewise.
(struct bitmap_desc_hasher): Likewise.
(bitmap_desc_hasher::hash): Likewise.
(bitmap_desc_hasher::equal): Likewise.
(get_bitmap_descriptor): Likewise.
(bitmap_register): User new memory descriptor API.
(register_overhead): Likewise.
(bitmap_find_bit): Register nsearches and search_iter statistics.
(struct bitmap_output_info): Remove.
(print_statistics): Likewise.
(dump_bitmap_statistics): Use new memory descriptor.
* bitmap.h (struct bitmap_usage): New class.
* genmatch.c: Extend header file inclusion.
* genpreds.c: Likewise.
* ggc-common.c (struct ggc_usage): New class.
(struct ggc_loc_desc_hasher): Remove.
(ggc_loc_desc_hasher::hash): Likewise.
(ggc_loc_desc_hasher::equal): Likewise.
(struct ggc_ptr_hash_entry): Likewise.
(struct ptr_hash_hasher): Likewise.
(ptr_hash_hasher::hash): Likewise.
(ptr_hash_hasher::equal): Likewise.
(make_loc_descriptor): Likewise.
(ggc_prune_ptr): Likewise.
(dump_ggc_loc_statistics): Use new memory descriptor.
(ggc_record_overhead): Likewise.
(ggc_free_overhead): Likewise.
(final_cmp_statistic): Remove.
(cmp_statistic): Likewise.
(ggc_add_statistics): Liekwise.
(ggc_prune_overhead_list): Likewise.
* hash-map-traits.h: New file.
* hash-map.h (struct default_hashmap_traits): Move the traits to a
separate header file.
* hash-set.h: Pass memory statistics info to ctor.
* hash-table.c (void dump_hash_table_loc_statistics): New function.
* hash-table.h (hash_table::hash_table): Add new ctor arguments.
(hash_table::~hash_table): Register memory release operation.
(hash_table::alloc_entries): Handle memory allocation operation.
(hash_table::expand): Likewise.
* inchash.c (iterative_hash_hashval_t): Move implementation to header
file.
(iterative_hash_host_wide_int): Likewise.
* inchash.h (class hash): Likewise.
* mem-stats-traits.h: New file.
* mem-stats.h: New file.
(mem_location): Add new class.
(mem_usage): Likewise.
(mem_alloc_description): Likewise.
* sese.c: Add new header file inclusision.
* toplev.c (dump_memory_report): Add report for hash_table, hash_map
and hash_set.
* tree-sra.c: Add new header file inclusision.
* vec.c (struct vec_descriptor): Remove.
(hash_descriptor): Likewise.
(struct vec_usage): Likewise.
(struct ptr_hash_entry): Likewise.
(hash_ptr): Likewise.
(eq_ptr): Likewise.
(vec_prefix::register_overhead): Use new memory descriptor API.
(vec_prefix::release_overhead): Likewise.
(add_statistics): Remove.
(dump_vec_loc_statistics): Use new memory descriptor API.
* vec.h (struct vec_prefix): Likewise.
(va_heap::reserve): Likewise.
(va_heap::release): Likewise.
* emit-rtl.c (gen_raw_REG): Fix passing MEM_STAT.
From-SVN: r223748
Diffstat (limited to 'gcc/mem-stats.h')
-rw-r--r-- | gcc/mem-stats.h | 550 |
1 files changed, 550 insertions, 0 deletions
diff --git a/gcc/mem-stats.h b/gcc/mem-stats.h new file mode 100644 index 0000000..ac47231 --- /dev/null +++ b/gcc/mem-stats.h @@ -0,0 +1,550 @@ +#ifndef GCC_MEM_STATS_H +#define GCC_MEM_STATS_H + +#include "hash-map-traits.h" +#include "inchash.h" +#include "mem-stats-traits.h" +#include "vec.h" + +/* Forward declaration. */ +template<typename Key, typename Value, + typename Traits = default_hashmap_traits> +class hash_map; + +/* Memory allocation location. */ +struct mem_location +{ + /* Default constructor. */ + inline mem_location () {} + + /* Constructor. */ + inline mem_location (const char *filename, const char *function, int line, + mem_alloc_origin origin, bool ggc): + m_filename (filename), m_function (function), m_line (line), m_origin + (origin), m_ggc (ggc) {} + + /* Compute hash value based on file name, function name and line in + source code. As there is just a single pointer registered for every + constant that points to e.g. the same file name, we can use hash + of the pointer. */ + hashval_t hash () + { + inchash::hash hash; + + hash.add_ptr (m_filename); + hash.add_ptr (m_function); + hash.add_int (m_line); + + return hash.end (); + } + + /* Return true if the memory location is equal to OTHER. */ + int equal (mem_location &other) + { + return m_filename == other.m_filename && m_function == other.m_function + && m_line == other.m_line; + } + + /* Return trimmed filename for the location. */ + inline const char *get_trimmed_filename () + { + const char *s1 = m_filename; + const char *s2; + + while ((s2 = strstr (s1, "gcc/"))) + s1 = s2 + 4; + + return s1; + } + + /* Return display name associated to ORIGIN type. */ + static const char *get_origin_name (mem_alloc_origin origin) + { + return mem_alloc_origin_names[(unsigned) origin]; + } + + /* File name of source code. */ + const char *m_filename; + /* Funcation name. */ + const char *m_function; + /* Line number in source code. */ + int m_line; + /* Origin type. */ + mem_alloc_origin m_origin; + /* Flag if used by GGC allocation. */ + bool m_ggc; +}; + +/* Memory usage register to a memory location. */ +struct mem_usage +{ + /* Default constructor. */ + mem_usage (): m_allocated (0), m_times (0), m_peak (0) {} + + /* Constructor. */ + mem_usage (size_t allocated, size_t times, size_t peak): + m_allocated (allocated), m_times (times), m_peak (peak) {} + + /* Register overhead of SIZE bytes. */ + inline void register_overhead (size_t size) + { + m_allocated += size; + m_times++; + + if (m_peak < m_allocated) + m_peak = m_allocated; + } + + /* Release overhead of SIZE bytes. */ + inline void release_overhead (size_t size) + { + gcc_assert (size <= m_allocated); + + m_allocated -= size; + } + + /* Sum the usage with SECOND usage. */ + mem_usage operator+ (const mem_usage &second) + { + return mem_usage (m_allocated + second.m_allocated, + m_times + second.m_times, + m_peak + second.m_peak); + } + + /* Comparison operator. */ + inline bool operator< (const mem_usage &second) const + { + return (m_allocated == second.m_allocated ? + (m_peak == second.m_peak ? m_times < second.m_times + : m_peak < second.m_peak) : m_allocated < second.m_allocated); + } + + /* Compare wrapper used by qsort method. */ + static int compare (const void *first, const void *second) + { + typedef std::pair<mem_location *, mem_usage *> mem_pair_t; + + const mem_pair_t f = *(const mem_pair_t *)first; + const mem_pair_t s = *(const mem_pair_t *)second; + + return (*f.second) < (*s.second); + } + + /* Dump usage coupled to LOC location, where TOTAL is sum of all rows. */ + inline void dump (mem_location *loc, mem_usage &total) const + { + char s[4096]; + sprintf (s, "%s:%i (%s)", loc->get_trimmed_filename (), + loc->m_line, loc->m_function); + + s[48] = '\0'; + + fprintf (stderr, "%-48s %10li:%5.1f%%%10li%10li:%5.1f%%%10s\n", s, + (long)m_allocated, get_percent (m_allocated, total.m_allocated), + (long)m_peak, (long)m_times, + get_percent (m_times, total.m_times), loc->m_ggc ? "ggc" : "heap"); + } + + /* Dump footer. */ + inline void dump_footer () + { + print_dash_line (); + fprintf (stderr, "%s%54li%27li\n", "Total", (long)m_allocated, + (long)m_times); + print_dash_line (); + } + + /* Return fraction of NOMINATOR and DENOMINATOR in percent. */ + static inline float get_percent (size_t nominator, size_t denominator) + { + return denominator == 0 ? 0.0f : nominator * 100.0 / denominator; + } + + /* Print line made of dashes. */ + static inline void print_dash_line () + { + fprintf (stderr, "%s\n", std::string (128, '-').c_str ()); + } + + /* Dump header with NAME. */ + static inline void dump_header (const char *name) + { + fprintf (stderr, "%-48s %11s%16s%10s%17s\n", name, "Leak", "Peak", + "Times", "Type"); + print_dash_line (); + } + + /* Current number of allocated bytes. */ + size_t m_allocated; + /* Number of allocations. */ + size_t m_times; + /* Peak allocation in bytes. */ + size_t m_peak; +}; + +/* Memory usage pair that connectes memory usage and number + of allocated bytes. */ +template <class T> +struct mem_usage_pair +{ + mem_usage_pair (T *usage_, size_t allocated_): usage (usage_), + allocated (allocated_) {} + + T *usage; + size_t allocated; +}; + +/* Memory allocation description. */ +template <class T> +class mem_alloc_description +{ +public: + struct mem_alloc_hashmap_traits: default_hashmap_traits + { + static hashval_t + hash (const mem_location *l) + { + inchash::hash hstate; + + hstate.add_ptr ((const void *)l->m_filename); + hstate.add_ptr (l->m_function); + hstate.add_int (l->m_line); + + return hstate.end (); + } + + static bool + equal_keys (const mem_location *l1, const mem_location *l2) + { + return l1->m_filename == l2->m_filename + && l1->m_function == l2->m_function + && l1->m_line == l2->m_line; + } + }; + + /* Internal class type definitions. */ + typedef hash_map <mem_location *, T *, mem_alloc_hashmap_traits> mem_map_t; + typedef hash_map <const void *, mem_usage_pair<T>, default_hashmap_traits> + reverse_mem_map_t; + typedef hash_map <const void *, std::pair<T *, size_t> > reverse_object_map_t; + typedef std::pair <mem_location *, T *> mem_list_t; + + /* Default contructor. */ + mem_alloc_description (); + + /* Default destructor. */ + ~mem_alloc_description (); + + /* Returns true if instance PTR is registered by the memory description. */ + bool contains_descriptor_for_instance (const void *ptr); + + /* Return descriptor for instance PTR. */ + T *get_descriptor_for_instance (const void *ptr); + + /* Register memory allocation descriptor for container PTR. ORIGIN identifies + type of container and GGC identifes if the allocation is handled in GGC + memory. Each location is identified by file NAME, LINE in source code and + FUNCTION name. */ + T *register_descriptor (const void *ptr, mem_alloc_origin origin, + bool ggc, const char *name, int line, + const char *function); + + /* Register instance overhead identified by PTR pointer. Allocation takes + SIZE bytes. */ + T *register_instance_overhead (size_t size, const void *ptr); + + /* For containers (and GGC) where we want to track every instance object, + we register allocation of SIZE bytes, identified by PTR pointer, belonging + to USAGE descriptor. */ + void register_object_overhead (T *usage, size_t size, const void *ptr); + + /* Release PTR pointer of SIZE bytes. If REMOVE_FROM_MAP is set to true, + remove the instance from reverse map. */ + void release_instance_overhead (void *ptr, size_t size, + bool remove_from_map = false); + + /* Release intance object identified by PTR pointer. */ + void release_object_overhead (void *ptr); + + /* Get sum value for ORIGIN type of allocation for the descriptor. */ + T get_sum (mem_alloc_origin origin); + + /* Get all tracked instances registered by the description. Items + are filtered by ORIGIN type, LENGTH is return value where we register + the number of elements in the list. If we want to process custom order, + CMP comparator can be provided. */ + mem_list_t *get_list (mem_alloc_origin origin, unsigned *length, + int (*cmp) (const void *first, const void *second) + = NULL); + + /* Dump all tracked instances of type ORIGIN. If we want to process custom + order, CMP comparator can be provided. */ + void dump (mem_alloc_origin origin, + int (*cmp) (const void *first, const void *second) = NULL); + + /* Reverse object map used for every object allocation mapping. */ + reverse_object_map_t *m_reverse_object_map; + +private: + /* Register overhead of SIZE bytes of ORIGIN type. PTR pointer is allocated + in NAME source file, at LINE in source code, in FUNCTION. */ + T *register_overhead (size_t size, mem_alloc_origin origin, const char *name, + int line, const char *function, const void *ptr); + + /* Allocation location coupled to the description. */ + mem_location m_location; + + /* Location to usage mapping. */ + mem_map_t *m_map; + + /* Reverse pointer to usage mapping. */ + reverse_mem_map_t *m_reverse_map; +}; + +#include "hash-map.h" + +/* Returns true if instance PTR is registered by the memory description. */ + +template <class T> +inline bool +mem_alloc_description<T>::contains_descriptor_for_instance (const void *ptr) +{ + return m_reverse_map->get (ptr); +} + +/* Return descriptor for instance PTR. */ + +template <class T> +inline T* +mem_alloc_description<T>::get_descriptor_for_instance (const void *ptr) +{ + return m_reverse_map->get (ptr) ? (*m_reverse_map->get (ptr)).usage : NULL; +} + +/* Register memory allocation descriptor for container PTR. ORIGIN identifies + type of container and GGC identifes if the allocation is handled in GGC + memory. Each location is identified by file NAME, LINE in source code and + FUNCTION name. */ + +template <class T> +inline T* +mem_alloc_description<T>::register_descriptor (const void *ptr, + mem_alloc_origin origin, + bool ggc, + const char *filename, + int line, + const char *function) +{ + mem_location *l = new mem_location (filename, function, line, origin, ggc); + T *usage = NULL; + + T **slot = m_map->get (l); + if (slot) + { + delete l; + usage = *slot; + } + else + { + usage = new T (); + m_map->put (l, usage); + } + + if (!m_reverse_map->get (ptr)) + m_reverse_map->put (ptr, mem_usage_pair<T> (usage, 0)); + + return usage; +} + +/* Register instance overhead identified by PTR pointer. Allocation takes + SIZE bytes. */ + +template <class T> +inline T* +mem_alloc_description<T>::register_instance_overhead (size_t size, + const void *ptr) +{ + mem_usage_pair <T> *slot = m_reverse_map->get (ptr); + if (!slot) + { + /* Due to PCH, it can really happen. */ + return NULL; + } + + T *usage = (*slot).usage; + usage->register_overhead (size); + + return usage; +} + +/* For containers (and GGC) where we want to track every instance object, + we register allocation of SIZE bytes, identified by PTR pointer, belonging + to USAGE descriptor. */ + +template <class T> +void +mem_alloc_description<T>::register_object_overhead (T *usage, size_t size, + const void *ptr) +{ + /* In case of GGC, it is possible to have already occupied the memory + location. */ + m_reverse_object_map->put (ptr, std::pair<T *, size_t> (usage, size)); +} + +/* Register overhead of SIZE bytes of ORIGIN type. PTR pointer is allocated + in NAME source file, at LINE in source code, in FUNCTION. */ + +template <class T> +inline T* +mem_alloc_description<T>::register_overhead (size_t size, + mem_alloc_origin origin, + const char *filename, + int line, + const char *function, + const void *ptr) +{ + T *usage = register_descriptor (ptr, origin, filename, line, function); + usage->register_overhead (size); + + return usage; +} + +/* Release PTR pointer of SIZE bytes. */ + +template <class T> +inline void +mem_alloc_description<T>::release_instance_overhead (void *ptr, size_t size, + bool remove_from_map) +{ + mem_usage_pair<T> *slot = m_reverse_map->get (ptr); + + if (!slot) + { + /* Due to PCH, it can really happen. */ + return; + } + + mem_usage_pair<T> usage_pair = *slot; + usage_pair.usage->release_overhead (size); + + if (remove_from_map) + m_reverse_map->remove (ptr); +} + +/* Release intance object identified by PTR pointer. */ + +template <class T> +inline void +mem_alloc_description<T>::release_object_overhead (void *ptr) +{ + std::pair <T *, size_t> *entry = m_reverse_object_map->get (ptr); + if (entry) + { + entry->first->release_overhead (entry->second); + m_reverse_object_map->remove (ptr); + } +} + +/* Default contructor. */ + +template <class T> +inline +mem_alloc_description<T>::mem_alloc_description () +{ + m_map = new mem_map_t (13, false, false); + m_reverse_map = new reverse_mem_map_t (13, false, false); + m_reverse_object_map = new reverse_object_map_t (13, false, false); +} + +/* Default destructor. */ + +template <class T> +inline +mem_alloc_description<T>::~mem_alloc_description () +{ + for (typename mem_map_t::iterator it = m_map->begin (); it != m_map->end (); + ++it) + { + delete (*it).first; + delete (*it).second; + } + + delete m_map; + delete m_reverse_map; + delete m_reverse_object_map; +} + +/* Get all tracked instances registered by the description. Items are filtered + by ORIGIN type, LENGTH is return value where we register the number of + elements in the list. If we want to process custom order, CMP comparator + can be provided. */ + +template <class T> +inline +typename mem_alloc_description<T>::mem_list_t * +mem_alloc_description<T>::get_list (mem_alloc_origin origin, unsigned *length, + int (*cmp) (const void *first, const void *second)) +{ + /* vec data structure is not used because all vectors generate memory + allocation info a it would create a cycle. */ + size_t element_size = sizeof (mem_list_t); + mem_list_t *list = XCNEWVEC (mem_list_t, m_map->elements ()); + unsigned i = 0; + + for (typename mem_map_t::iterator it = m_map->begin (); it != m_map->end (); + ++it) + if ((*it).first->m_origin == origin) + list[i++] = std::pair<mem_location*, T*> (*it); + + qsort (list, i, element_size, cmp == NULL ? T::compare : cmp); + *length = i; + + return list; +} + +/* Get sum value for ORIGIN type of allocation for the descriptor. */ + +template <class T> +inline T +mem_alloc_description<T>::get_sum (mem_alloc_origin origin) +{ + unsigned length; + mem_list_t *list = get_list (origin, &length); + T sum; + + for (unsigned i = 0; i < length; i++) + sum = sum + *list[i].second; + + XDELETEVEC (list); + + return sum; +} + +/* Dump all tracked instances of type ORIGIN. If we want to process custom + order, CMP comparator can be provided. */ + +template <class T> +inline void +mem_alloc_description<T>::dump (mem_alloc_origin origin, + int (*cmp) (const void *first, + const void *second)) +{ + unsigned length; + + fprintf (stderr, "\n"); + + mem_list_t *list = get_list (origin, &length, cmp); + T total = get_sum (origin); + + T::dump_header (mem_location::get_origin_name (origin)); + for (int i = length - 1; i >= 0; i--) + list[i].second->dump (list[i].first, total); + + total.dump_footer (); + + XDELETEVEC (list); + + fprintf (stderr, "\n"); +} + +#endif // GCC_MEM_STATS_H |