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gmqcc/util.c
Wolfgang Bumiller 2382fdee50 util_swa_* + GMQCC_INLINE
2012-12-23 13:11:20 +01:00

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/*
* Copyright (C) 2012
* Dale Weiler
* Wolfgang Bumiller
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is furnished to do
* so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <stdarg.h>
#include <errno.h>
#include "gmqcc.h"
/* TODO: remove globals ... */
uint64_t mem_ab = 0;
uint64_t mem_db = 0;
uint64_t mem_at = 0;
uint64_t mem_dt = 0;
struct memblock_t {
const char *file;
unsigned int line;
size_t byte;
struct memblock_t *next;
struct memblock_t *prev;
};
static struct memblock_t *mem_start = NULL;
void *util_memory_a(size_t byte, unsigned int line, const char *file) {
struct memblock_t *info = (struct memblock_t*)malloc(sizeof(struct memblock_t) + byte);
void *data = (void*)(info+1);
if (!info) return NULL;
info->line = line;
info->byte = byte;
info->file = file;
info->prev = NULL;
info->next = mem_start;
if (mem_start)
mem_start->prev = info;
mem_start = info;
util_debug("MEM", "allocation: % 8u (bytes) address 0x%08X @ %s:%u\n", byte, data, file, line);
mem_at++;
mem_ab += info->byte;
return data;
}
void util_memory_d(void *ptrn, unsigned int line, const char *file) {
struct memblock_t *info = NULL;
if (!ptrn) return;
info = ((struct memblock_t*)ptrn - 1);
util_debug("MEM", "released: % 8u (bytes) address 0x%08X @ %s:%u\n", info->byte, ptrn, file, line);
mem_db += info->byte;
mem_dt++;
if (info->prev)
info->prev->next = info->next;
if (info->next)
info->next->prev = info->prev;
if (info == mem_start)
mem_start = info->next;
free(info);
}
void *util_memory_r(void *ptrn, size_t byte, unsigned int line, const char *file) {
struct memblock_t *oldinfo = NULL;
struct memblock_t *newinfo;
if (!ptrn)
return util_memory_a(byte, line, file);
if (!byte) {
util_memory_d(ptrn, line, file);
return NULL;
}
oldinfo = ((struct memblock_t*)ptrn - 1);
newinfo = ((struct memblock_t*)malloc(sizeof(struct memblock_t) + byte));
util_debug("MEM", "reallocation: % 8u -> %u (bytes) address 0x%08X -> 0x%08X @ %s:%u\n", oldinfo->byte, byte, ptrn, (void*)(newinfo+1), file, line);
/* new data */
if (!newinfo) {
util_memory_d(oldinfo+1, line, file);
return NULL;
}
/* copy old */
memcpy(newinfo+1, oldinfo+1, oldinfo->byte);
/* free old */
if (oldinfo->prev)
oldinfo->prev->next = oldinfo->next;
if (oldinfo->next)
oldinfo->next->prev = oldinfo->prev;
if (oldinfo == mem_start)
mem_start = oldinfo->next;
/* fill info */
newinfo->line = line;
newinfo->byte = byte;
newinfo->file = file;
newinfo->prev = NULL;
newinfo->next = mem_start;
if (mem_start)
mem_start->prev = newinfo;
mem_start = newinfo;
mem_ab -= oldinfo->byte;
mem_ab += newinfo->byte;
free(oldinfo);
return newinfo+1;
}
void util_meminfo() {
struct memblock_t *info;
if (!opts.memchk)
return;
for (info = mem_start; info; info = info->next) {
util_debug("MEM", "lost: % 8u (bytes) at %s:%u\n",
info->byte,
info->file,
info->line);
}
util_debug("MEM", "Memory information:\n\
Total allocations: %llu\n\
Total deallocations: %llu\n\
Total allocated: %llu (bytes)\n\
Total deallocated: %llu (bytes)\n\
Leaks found: lost %llu (bytes) in %d allocations\n",
mem_at, mem_dt,
mem_ab, mem_db,
(mem_ab - mem_db),
(mem_at - mem_dt)
);
}
/*
* Some string utility functions, because strdup uses malloc, and we want
* to track all memory (without replacing malloc).
*/
char *util_strdup(const char *s) {
size_t len = 0;
char *ptr = NULL;
if (!s)
return NULL;
if ((len = strlen(s)) && (ptr = (char*)mem_a(len+1))) {
memcpy(ptr, s, len);
ptr[len] = '\0';
}
return ptr;
}
void util_debug(const char *area, const char *ms, ...) {
va_list va;
if (!opts.debug)
return;
if (!strcmp(area, "MEM") && !opts.memchk)
return;
va_start(va, ms);
con_out ("[%s] ", area);
con_vout(ms, va);
va_end (va);
}
/*
* only required if big endian .. otherwise no need to swap
* data.
*/
#if PLATFORM_BYTE_ORDER == GMQCC_BYTE_ORDER_BIG
static GMQCC_INLINE void util_swap16(uint16_t *d, size_t l) {
while (l--) {
d[l] = (d[l] << 8) | (d[l] >> 8);
}
}
static GMQCC_INLINE void util_swap32(uint32_t *d, size_t l) {
while (l--) {
uint32_t v;
v = ((d[l] << 8) & 0xFF00FF00) | ((d[l] >> 8) & 0x00FF00FF);
d[l] = (v << 16) | (v >> 16);
}
}
/* Some strange system doesn't like constants that big, AND doesn't recognize an ULL suffix
* so let's go the safe way
*/
static GMQCC_INLINE void util_swap64(uint32_t *d, size_t l) {
/*
while (l--) {
uint64_t v;
v = ((d[l] << 8) & 0xFF00FF00FF00FF00) | ((d[l] >> 8) & 0x00FF00FF00FF00FF);
v = ((v << 16) & 0xFFFF0000FFFF0000) | ((v >> 16) & 0x0000FFFF0000FFFF);
d[l] = (v << 32) | (v >> 32);
}
*/
size_t i;
for (i = 0; i < l; i += 2) {
uint32_t v1 = d[i];
d[i] = d[i+1];
d[i+1] = v1;
util_swap32(d+i, 2);
}
}
#endif
void util_endianswap(void *_data, size_t length, unsigned int typesize) {
# if PLATFORM_BYTE_ORDER == -1 /* runtime check */
if (*((char*)&typesize))
return;
#else
/* prevent unused warnings */
(void) _data;
(void) length;
(void) typesize;
# if PLATFORM_BYTE_ORDER == GMQCC_BYTE_ORDER_LITTLE
return;
# else
switch (typesize) {
case 1: return;
case 2:
util_swap16((uint16_t*)_data, length>>1);
return;
case 4:
util_swap32((uint32_t*)_data, length>>2);
return;
case 8:
util_swap64((uint32_t*)_data, length>>3);
return;
default: abort(); /* please blow the fuck up! */
}
# endif
#endif
}
/*
* CRC algorithms vary in the width of the polynomial, the value of said polynomial,
* the initial value used for the register, weather the bits of each byte are reflected
* before being processed, weather the algorithm itself feeds input bytes through the
* register or XORs them with a byte from one end and then straight into the table, as
* well as (but not limited to the idea of reflected versions) where the final register
* value becomes reversed, and finally weather the value itself is used to XOR the final
* register value. AS such you can already imagine how painfully annoying CRCs are,
* of course we stand to target Quake, which expects it's certian set of rules for proper
* calculation of a CRC.
*
* In most traditional CRC algorithms on uses a reflected table driven method where a value
* or register is reflected if it's bits are swapped around it's center. For example:
* take the bits 0101 is the 4-bit reflection of 1010, and respectfully 0011 would be the
* reflection of 1100. Quake however expects a NON-Reflected CRC on the output, but still
* requires a final XOR on the values (0xFFFF and 0x0000) this is a standard CCITT CRC-16
* which I respectfully as a programmer don't agree with.
*
* So now you know what we target, and why we target it, despite how unsettling it may seem
* but those are what Quake seems to request.
*/
static const uint16_t util_crc16_table[] = {
0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50A5,
0x60C6, 0x70E7, 0x8108, 0x9129, 0xA14A, 0xB16B,
0xC18C, 0xD1AD, 0xE1CE, 0xF1EF, 0x1231, 0x0210,
0x3273, 0x2252, 0x52B5, 0x4294, 0x72F7, 0x62D6,
0x9339, 0x8318, 0xB37B, 0xA35A, 0xD3BD, 0xC39C,
0xF3FF, 0xE3DE, 0x2462, 0x3443, 0x0420, 0x1401,
0x64E6, 0x74C7, 0x44A4, 0x5485, 0xA56A, 0xB54B,
0x8528, 0x9509, 0xE5EE, 0xF5CF, 0xC5AC, 0xD58D,
0x3653, 0x2672, 0x1611, 0x0630, 0x76D7, 0x66F6,
0x5695, 0x46B4, 0xB75B, 0xA77A, 0x9719, 0x8738,
0xF7DF, 0xE7FE, 0xD79D, 0xC7BC, 0x48C4, 0x58E5,
0x6886, 0x78A7, 0x0840, 0x1861, 0x2802, 0x3823,
0xC9CC, 0xD9ED, 0xE98E, 0xF9AF, 0x8948, 0x9969,
0xA90A, 0xB92B, 0x5AF5, 0x4AD4, 0x7AB7, 0x6A96,
0x1A71, 0x0A50, 0x3A33, 0x2A12, 0xDBFD, 0xCBDC,
0xFBBF, 0xEB9E, 0x9B79, 0x8B58, 0xBB3B, 0xAB1A,
0x6CA6, 0x7C87, 0x4CE4, 0x5CC5, 0x2C22, 0x3C03,
0x0C60, 0x1C41, 0xEDAE, 0xFD8F, 0xCDEC, 0xDDCD,
0xAD2A, 0xBD0B, 0x8D68, 0x9D49, 0x7E97, 0x6EB6,
0x5ED5, 0x4EF4, 0x3E13, 0x2E32, 0x1E51, 0x0E70,
0xFF9F, 0xEFBE, 0xDFDD, 0xCFFC, 0xBF1B, 0xAF3A,
0x9F59, 0x8F78, 0x9188, 0x81A9, 0xB1CA, 0xA1EB,
0xD10C, 0xC12D, 0xF14E, 0xE16F, 0x1080, 0x00A1,
0x30C2, 0x20E3, 0x5004, 0x4025, 0x7046, 0x6067,
0x83B9, 0x9398, 0xA3FB, 0xB3DA, 0xC33D, 0xD31C,
0xE37F, 0xF35E, 0x02B1, 0x1290, 0x22F3, 0x32D2,
0x4235, 0x5214, 0x6277, 0x7256, 0xB5EA, 0xA5CB,
0x95A8, 0x8589, 0xF56E, 0xE54F, 0xD52C, 0xC50D,
0x34E2, 0x24C3, 0x14A0, 0x0481, 0x7466, 0x6447,
0x5424, 0x4405, 0xA7DB, 0xB7FA, 0x8799, 0x97B8,
0xE75F, 0xF77E, 0xC71D, 0xD73C, 0x26D3, 0x36F2,
0x0691, 0x16B0, 0x6657, 0x7676, 0x4615, 0x5634,
0xD94C, 0xC96D, 0xF90E, 0xE92F, 0x99C8, 0x89E9,
0xB98A, 0xA9AB, 0x5844, 0x4865, 0x7806, 0x6827,
0x18C0, 0x08E1, 0x3882, 0x28A3, 0xCB7D, 0xDB5C,
0xEB3F, 0xFB1E, 0x8BF9, 0x9BD8, 0xABBB, 0xBB9A,
0x4A75, 0x5A54, 0x6A37, 0x7A16, 0x0AF1, 0x1AD0,
0x2AB3, 0x3A92, 0xFD2E, 0xED0F, 0xDD6C, 0xCD4D,
0xBDAA, 0xAD8B, 0x9DE8, 0x8DC9, 0x7C26, 0x6C07,
0x5C64, 0x4C45, 0x3CA2, 0x2C83, 0x1CE0, 0x0CC1,
0xEF1F, 0xFF3E, 0xCF5D, 0xDF7C, 0xAF9B, 0xBFBA,
0x8FD9, 0x9FF8, 0x6E17, 0x7E36, 0x4E55, 0x5E74,
0x2E93, 0x3EB2, 0x0ED1, 0x1EF0
};
/* Non - Reflected */
uint16_t util_crc16(uint16_t current, const char *k, size_t len) {
register uint16_t h = current;
for (; len; --len, ++k)
h = util_crc16_table[(h>>8)^((unsigned char)*k)]^(h<<8);
return h;
}
/* Reflective Varation (for reference) */
#if 0
uint16_t util_crc16(const char *k, int len, const short clamp) {
register uint16_t h= (uint16_t)0xFFFFFFFF;
for (; len; --len, ++k)
h = util_crc16_table[(h^((unsigned char)*k))&0xFF]^(h>>8);
return (~h)%clamp;
}
#endif
size_t util_strtocmd(const char *in, char *out, size_t outsz) {
size_t sz = 1;
for (; *in && sz < outsz; ++in, ++out, ++sz)
*out = (*in == '-') ? '_' : (isalpha(*in) && !isupper(*in)) ? *in + 'A' - 'a': *in;
*out = 0;
return sz-1;
}
size_t util_strtononcmd(const char *in, char *out, size_t outsz) {
size_t sz = 1;
for (; *in && sz < outsz; ++in, ++out, ++sz)
*out = (*in == '_') ? '-' : (isalpha(*in) && isupper(*in)) ? *in + 'a' - 'A' : *in;
*out = 0;
return sz-1;
}
/* TODO: rewrite ... when I redo the ve cleanup */
void _util_vec_grow(void **a, size_t i, size_t s) {
vector_t *d = vec_meta(*a);
size_t m = *a ? 2 * d->allocated +i : i+1;
void *p = mem_r((*a ? d : NULL), s * m + sizeof(vector_t));
if (!*a)
((vector_t*)p)->used = 0;
*a = (vector_t*)p + 1;
vec_meta(*a)->allocated = m;
}
/*
* Hash table for generic data, based on dynamic memory allocations
* all around. This is the internal interface, please look for
* EXPOSED INTERFACE comment below
*/
typedef struct hash_node_t {
char *key; /* the key for this node in table */
void *value; /* pointer to the data as void* */
struct hash_node_t *next; /* next node (linked list) */
} hash_node_t;
GMQCC_INLINE size_t util_hthash(hash_table_t *ht, const char *key) {
const uint32_t mix = 0x5BD1E995;
const uint32_t rot = 24;
size_t size = strlen(key);
uint32_t hash = 0x1EF0 /* LICRC TAB */ ^ size;
uint32_t alias = 0;
const unsigned char *data = (const unsigned char*)key;
while (size >= 4) {
alias = *(uint32_t*)data;
alias *= mix;
alias ^= alias >> rot;
alias *= mix;
hash *= mix;
hash ^= alias;
data += 4;
size -= 4;
}
switch (size) {
case 3: hash ^= data[2] << 16;
case 2: hash ^= data[1] << 8;
case 1: hash ^= data[0];
hash *= mix;
}
hash ^= hash >> 13;
hash *= mix;
hash ^= hash >> 15;
return (size_t) (hash % ht->size);
}
hash_node_t *_util_htnewpair(const char *key, void *value) {
hash_node_t *node;
if (!(node = (hash_node_t*)mem_a(sizeof(hash_node_t))))
return NULL;
if (!(node->key = util_strdup(key))) {
mem_d(node);
return NULL;
}
node->value = value;
node->next = NULL;
return node;
}
/*
* EXPOSED INTERFACE for the hashtable implementation
* util_htnew(size) -- to make a new hashtable
* util_htset(table, key, value, sizeof(value)) -- to set something in the table
* util_htget(table, key) -- to get something from the table
* util_htdel(table) -- to delete the table
*/
hash_table_t *util_htnew(size_t size) {
hash_table_t *hashtable = NULL;
if (size < 1)
return NULL;
if (!(hashtable = (hash_table_t*)mem_a(sizeof(hash_table_t))))
return NULL;
if (!(hashtable->table = (hash_node_t**)mem_a(sizeof(hash_node_t*) * size))) {
mem_d(hashtable);
return NULL;
}
hashtable->size = size;
memset(hashtable->table, 0, sizeof(hash_node_t*) * size);
return hashtable;
}
void util_htseth(hash_table_t *ht, const char *key, size_t bin, void *value) {
hash_node_t *newnode = NULL;
hash_node_t *next = NULL;
hash_node_t *last = NULL;
next = ht->table[bin];
while (next && next->key && strcmp(key, next->key) > 0)
last = next, next = next->next;
/* already in table, do a replace */
if (next && next->key && strcmp(key, next->key) == 0) {
next->value = value;
} else {
/* not found, grow a pair man :P */
newnode = _util_htnewpair(key, value);
if (next == ht->table[bin]) {
newnode->next = next;
ht->table[bin] = newnode;
} else if (!next) {
last->next = newnode;
} else {
newnode->next = next;
last->next = newnode;
}
}
}
void util_htset(hash_table_t *ht, const char *key, void *value) {
util_htseth(ht, key, util_hthash(ht, key), value);
}
void *util_htgeth(hash_table_t *ht, const char *key, size_t bin) {
hash_node_t *pair = ht->table[bin];
while (pair && pair->key && strcmp(key, pair->key) > 0)
pair = pair->next;
if (!pair || !pair->key || strcmp(key, pair->key) != 0)
return NULL;
return pair->value;
}
void *util_htget(hash_table_t *ht, const char *key) {
return util_htgeth(ht, key, util_hthash(ht, key));
}
/*
* Free all allocated data in a hashtable, this is quite the amount
* of work.
*/
void util_htdel(hash_table_t *ht) {
size_t i = 0;
for (; i < ht->size; i++) {
hash_node_t *n = ht->table[i];
hash_node_t *p;
/* free in list */
while (n) {
if (n->key)
mem_d(n->key);
p = n;
n = n->next;
mem_d(p);
}
}
/* free table */
mem_d(ht->table);
mem_d(ht);
}
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