/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /* * Copyright (C) 2011 Norbert Thiebaud * License: GPLv3 */ /* define to activate stats reporting on hash usage*/ /* #define HASH_STAT */ /* =============================================== * Set-up: defines to identify the system and system related properties * =============================================== */ #ifdef __APPLE__ #ifdef __x86_64__ #undef CORE_BIG_ENDIAN #define CORE_LITTLE_ENDIAN #else #define CORE_BIG_ENDIAN #undef CORE_LITTLE_ENDIAN #endif #endif #ifdef _AIX #define CORE_BIG_ENDIAN #undef CORE_LITTLE_ENDIAN #endif /* Def _AIX */ #ifdef _MSC_VER #undef CORE_BIG_ENDIAN #define CORE_LITTLE_ENDIAN #endif /* Def _MSC_VER */ #if defined(__linux) || defined(__FreeBSD__) #include #if __BYTE_ORDER == __LITTLE_ENDIAN #undef CORE_BIG_ENDIAN #define CORE_LITTLE_ENDIAN #else /* !(__BYTE_ORDER == __LITTLE_ENDIAN) */ #if __BYTE_ORDER == __BIG_ENDIAN #define CORE_BIG_ENDIAN #undef CORE_LITTLE_ENDIAN #endif /* __BYTE_ORDER == __BIG_ENDIAN */ #endif /* !(__BYTE_ORDER == __LITTLE_ENDIAN) */ #endif /* Def __linux */ #if defined(__OpenBSD__) || defined(__FreeBSD__) || \ defined(__NetBSD__) || defined(__DragonFly__) #include #if _BYTE_ORDER == _LITTLE_ENDIAN #undef CORE_BIG_ENDIAN #define CORE_LITTLE_ENDIAN #else /* !(_BYTE_ORDER == _LITTLE_ENDIAN) */ #if _BYTE_ORDER == _BIG_ENDIAN #define CORE_BIG_ENDIAN #undef CORE_LITTLE_ENDIAN #endif /* _BYTE_ORDER == _BIG_ENDIAN */ #endif /* !(_BYTE_ORDER == _LITTLE_ENDIAN) */ #endif /* Def *BSD */ #if defined(__HAIKU__) #include #if __BYTE_ORDER == __LITTLE_ENDIAN #undef CORE_BIG_ENDIAN #define CORE_LITTLE_ENDIAN #else /* !(__BYTE_ORDER == __LITTLE_ENDIAN) */ #if __BYTE_ORDER == __BIG_ENDIAN #define CORE_BIG_ENDIAN #undef CORE_LITTLE_ENDIAN #endif /* __BYTE_ORDER == __BIG_ENDIAN */ #endif /* !(__BYTE_ORDER == __LITTLE_ENDIAN) */ #endif /* Def __HAIKU__ */ #ifdef __sun #ifdef __sparc #define CORE_BIG_ENDIAN #undef CORE_LITTLE_ENDIAN #else /* Ndef __sparc */ #undef CORE_BIG_ENDIAN #define CORE_LITTLE_ENDIAN #endif /* Ndef __sparc */ #endif /* Def __sun */ #include #include #include #include #include #include #include #include #include #ifdef _MSC_VER #include #else #include #endif #include /* modes */ #ifdef _MSC_VER #define FILE_O_RDONLY _O_RDONLY #define FILE_O_BINARY _O_BINARY #define PATHNCMP _strnicmp /* MSVC converts paths to lower-case sometimes? */ #define ssize_t long #define S_ISREG(mode) (((mode) & _S_IFMT) == (_S_IFREG)) /* MSVC does not have this macro */ #else /* not windaube */ #define FILE_O_RDONLY O_RDONLY #define FILE_O_BINARY 0 #define PATHNCMP strncmp #endif /* not windaube */ #ifndef TRUE #define TRUE 1 #endif #ifndef FALSE #define FALSE 0 #endif static int internal_boost = 0; static char* base_dir; static char* work_dir; static size_t work_dir_len; #ifdef __GNUC__ #define clz __builtin_clz #else static int clz(unsigned int value) { int result = 32; while(value) { value >>= 1; result -= 1; } return result; } #endif static unsigned int get_unaligned_uint(const unsigned char* cursor) { unsigned int result; memcpy(&result, cursor, sizeof(unsigned int)); return result; } /* =============================================== * memory pool for fast fix-size allocation (non-thread-safe) * =============================================== */ struct pool { void* head_free; /**< head of a linked list of freed element */ char* fresh; /**< top of a memory block to dig new element */ char* tail; /**< to detect end of extent... when fresh pass tail */ void* extent; /**< pointer to the primary extent block */ int size_elem; /**< size of an element. */ int primary; /**< primary allocation in bytes */ int secondary; /**< secondary allocation in bytes */ }; #define POOL_ALIGN_INCREMENT 8 /**< alignment, must be a power of 2 and of size > to sizeof(void*) */ static void* pool_take_extent(struct pool* pool, int allocate) { unsigned int size = 0; void* extent; void* data = NULL; if(pool->extent) { /* we already have an extent, so this is a secondary */ if(pool->secondary) { size = pool->secondary; } } else { assert(pool->primary); size = pool->primary; } if(size) { extent = malloc(size); if(extent) { *(void**)extent = pool->extent; pool->extent = extent; if(allocate) { data = ((char*)extent) + POOL_ALIGN_INCREMENT; pool->fresh = ((char*)data) + pool->size_elem; pool->tail = pool->fresh + (size - pool->size_elem); } else { pool->fresh = ((char*)extent) + POOL_ALIGN_INCREMENT; pool->tail = pool->fresh + (size - pool->size_elem); } } } return data; } /* Create a memory pool for fix size objects * this is a simplified implementation that * is _not_ thread safe. */ static struct pool* pool_create(int size_elem, int primary, int secondary) { struct pool* pool; assert(primary > 0); assert(secondary >= 0); assert(size_elem > 0); pool = (struct pool*)calloc(1, sizeof(struct pool)); if(!pool) return NULL; /* Adjust the element size so that it be aligned, and so that an element could * at least contain a void* */ pool->size_elem = size_elem = (size_elem + POOL_ALIGN_INCREMENT - 1) & ~(POOL_ALIGN_INCREMENT - 1); pool->primary = (size_elem * primary) + POOL_ALIGN_INCREMENT; pool->secondary = secondary > 0 ? (size_elem * secondary) + POOL_ALIGN_INCREMENT : 0; pool_take_extent(pool, FALSE); return pool; } static void pool_destroy(struct pool* pool) { void* extent; void* next; if(pool != NULL) { extent = pool->extent; while(extent) { next = *(void**)extent; free(extent); extent = next; } free(pool); } } static void* pool_alloc(struct pool* pool) { void* data; data = pool->head_free; if(data == NULL) { /* we have no old-freed elem */ if(pool->fresh <= pool->tail) { /* pick a slice of the current extent */ data = (void*)pool->fresh; pool->fresh += pool->size_elem; } else { /* allocate a new extent */ data = pool_take_extent(pool, TRUE); } } else { /* re-used old freed element by chopping the head of the free list */ pool->head_free = *(void**)data; } return data; } /* =============================================== * Hash implementation customized to be just tracking * a unique list of string (i.e no data associated * with the key, no need for retrieval, etc... * * This is tuned for the particular use-case we have here * measures in tail_build showed that * we can get north of 4000 distinct values stored in a hash * the collision rate is at worse around 2% * the collision needing an expensive memcmp to resolve * have a rate typically at 1 per 1000 * for tail_build we register 37229 unique key * with a total of 377 extra memcmp needed * which is completely negligible compared to the * number of memcmp required to eliminate duplicate * entry (north of 2.5 millions for tail_build) * =============================================== */ struct hash_elem { struct hash_elem* next; const char* key; int key_len; }; struct hash { struct hash_elem** array; struct pool* elems_pool; unsigned int used; unsigned int size; unsigned int load_limit; #ifdef HASH_STAT int stored; int collisions; int cost; int memcmp; #endif }; /* The following hash_compute function was adapted from : * lookup3.c, by Bob Jenkins, May 2006, Public Domain. * * The changes from the original are mostly cosmetic */ #define rot(x,k) (((x)<<(k)) | ((x)>>(32-(k)))) #if defined CORE_BIG_ENDIAN #define MASK_C1 0xFFFFFF00 #define MASK_C2 0xFFFF0000 #define MASK_C3 0xFF000000 #elif defined CORE_LITTLE_ENDIAN #define MASK_C1 0xFFFFFF #define MASK_C2 0xFFFF #define MASK_C3 0xFF #else #error "Missing Endianness definition" #endif #define mix(a,b,c) \ { \ a -= c; a ^= rot(c, 4); c += b; \ b -= a; b ^= rot(a, 6); a += c; \ c -= b; c ^= rot(b, 8); b += a; \ a -= c; a ^= rot(c,16); c += b; \ b -= a; b ^= rot(a,19); a += c; \ c -= b; c ^= rot(b, 4); b += a; \ } #define final(a,b,c) \ { \ c ^= b; c -= rot(b,14); \ a ^= c; a -= rot(c,11); \ b ^= a; b -= rot(a,25); \ c ^= b; c -= rot(b,16); \ a ^= c; a -= rot(c,4); \ b ^= a; b -= rot(a,14); \ c ^= b; c -= rot(b,24); \ } static unsigned int hash_compute( struct hash const * hash, const char* key, int length) { unsigned int a; unsigned int b; unsigned int c; /* internal state */ const unsigned char* uk = (const unsigned char*)key; /* Set up the internal state */ a = b = c = 0xdeadbeef + (length << 2); /* we use this to 'hash' full path with mostly a common root * let's now waste too much cycles hashing mostly constant stuff */ if(length > 36) { uk += length - 36; length = 36; } /*------ all but last block: aligned reads and affect 32 bits of (a,b,c) */ while (length > 12) { a += get_unaligned_uint(uk); b += get_unaligned_uint(uk+4); c += get_unaligned_uint(uk+8); mix(a,b,c); length -= 12; uk += 12; } /*----------------------------- handle the last (probably partial) block */ /* Note: we possibly over-read, which would trigger complaint from VALGRIND * but we mask the undefined stuff if any, so we are still good, thanks * to alignment of memory allocation and tail-memory management overhead * we always can read 3 bytes past the official end without triggering * a segfault -- if you find a platform/compiler couple for which that postulate * is false, then you just need to over-allocate by 2 more bytes in file_load() * file_load already over-allocate by 1 to stick a \0 at the end of the buffer. */ switch(length) { case 12: c+=get_unaligned_uint(uk+8); b+=get_unaligned_uint(uk+4); a+=get_unaligned_uint(uk); break; case 11: c+=get_unaligned_uint(uk+8) & MASK_C1; b+=get_unaligned_uint(uk+4); a+=get_unaligned_uint(uk); break; case 10: c+=get_unaligned_uint(uk+8) & MASK_C2; b+=get_unaligned_uint(uk+4); a+=get_unaligned_uint(uk); break; case 9 : c+=get_unaligned_uint(uk+8) & MASK_C3; b+=get_unaligned_uint(uk+4); a+=get_unaligned_uint(uk); break; case 8 : b+=get_unaligned_uint(uk+4); a+=get_unaligned_uint(uk); break; case 7 : b+=get_unaligned_uint(uk+4) & MASK_C1; a+=get_unaligned_uint(uk); break; case 6 : b+=get_unaligned_uint(uk+4) & MASK_C2; a+=get_unaligned_uint(uk); break; case 5 : b+=get_unaligned_uint(uk+4) & MASK_C3; a+=get_unaligned_uint(uk); break; case 4 : a+=get_unaligned_uint(uk); break; case 3 : a+=get_unaligned_uint(uk) & MASK_C1; break; case 2 : a+=get_unaligned_uint(uk) & MASK_C2; break; case 1 : a+=get_unaligned_uint(uk) & MASK_C3; break; case 0 : return c & hash->size; /* zero length strings require no mixing */ } final(a,b,c); return c & hash->size; } static void hash_destroy(struct hash* hash) { if(hash) { if(hash->array) { free(hash->array); } if(hash->elems_pool) { pool_destroy(hash->elems_pool); } free(hash); } } static struct hash* hash_create(unsigned int size) { struct hash* hash; assert(size > 0); hash = (struct hash*)(calloc(1, sizeof(struct hash))); if(hash) { size += (size >> 2) + 1; /* ~ 75% load factor */ if(size >= 15) { hash->size = (((unsigned int)0xFFFFFFFF) >> clz((unsigned int)size)); } else { hash->size = size = 15; } hash->load_limit = hash->size - (hash->size >> 2); hash->used = 0; hash->array = (struct hash_elem**)calloc(hash->size + 1, sizeof(struct hash_elem*)); if(hash->array == NULL) { hash_destroy(hash); hash = NULL; } } if(hash) { hash->elems_pool = pool_create(sizeof(struct hash_elem), size, size << 1); if(!hash->elems_pool) { hash_destroy(hash); hash = NULL; } } return hash; } static void hash_resize(struct hash* hash) { unsigned int old_size = hash->size; unsigned int hashed; struct hash_elem* hash_elem; struct hash_elem* next; struct hash_elem** array; unsigned int i; hash->size = (old_size << 1) + 1; /* we really should avoid to get there... so print a message to alert of the condition */ fprintf(stderr, "resize hash %u -> %u\n", old_size, hash->size); if(hash->size == old_size) { return; } array = (struct hash_elem**)calloc(hash->size + 1, sizeof(struct hash_elem*)); if(array) { hash->load_limit = hash->size - (hash->size >> 2); for(i=0; i <= old_size; i++) { hash_elem = (struct hash_elem*)hash->array[i]; while(hash_elem) { next = hash_elem->next; hashed = hash_compute(hash, hash_elem->key, hash_elem->key_len); hash_elem->next = array[hashed]; array[hashed] = hash_elem; hash_elem = next; } } free(hash->array); hash->array = (struct hash_elem**)array; } else { hash->size = old_size; } } static int compare_key(struct hash const * hash, const char* a, const char* b, int len, int const * cost) { #ifdef HASH_STAT *cost += 1; hash->memcmp += 1; #else (void) hash; (void) cost; #endif return memcmp(a,b, len); } /* a customized hash_store function that just store the key and return * TRUE if the key was effectively stored, or FALSE if the key was already there */ static int hash_store(struct hash* hash, const char* key, int key_len) { unsigned int hashed; struct hash_elem* hash_elem; int cost = 0; (void) cost; hashed = hash_compute(hash, key, key_len); #ifdef HASH_STAT hash->stored += 1; #endif hash_elem = (struct hash_elem*)hash->array[hashed]; while(hash_elem && (hash_elem->key_len != key_len || compare_key(hash, hash_elem->key, key, key_len, &cost))) { hash_elem = hash_elem->next; } if(!hash_elem) { hash_elem = (struct hash_elem*)pool_alloc(hash->elems_pool); if(hash_elem) { hash_elem->key = key; hash_elem->key_len = key_len; hash_elem->next = hash->array[hashed]; #ifdef HASH_STAT if(hash_elem->next) { hash->collisions += 1; hash->cost += cost; } #endif hash->array[hashed] = hash_elem; hash->used += 1; if(hash->used > hash->load_limit) { hash_resize(hash); } } return TRUE; } return FALSE; } static int file_stat(const char* name, struct stat* buffer_stat, int* rc) { int rc_local = stat(name, buffer_stat); if (rc_local < 0) { *rc = errno; } return rc_local; } static off_t file_get_size(const char* name, int* rc) { struct stat buffer_stat; off_t size = -1; if (!file_stat(name, &buffer_stat, rc)) { if(S_ISREG(buffer_stat.st_mode)) { size = buffer_stat.st_size; } else { *rc = EINVAL; } } return size; } #if !ENABLE_RUNTIME_OPTIMIZATIONS static void * file_load_buffers[100000]; static size_t file_load_buffer_count = 0; #endif static char* file_load(const char* name, off_t* size, int* return_rc) { off_t local_size = 0; int rc = 0; char* buffer = NULL; int fd; assert(name != NULL); if(!size) { size = &local_size; } *size = file_get_size(name, &rc); if (!rc && *size >= 0) { fd = open(name, FILE_O_RDONLY | FILE_O_BINARY); if (!(fd == -1)) { buffer = (char*)malloc((size_t)(*size + 1)); #if !ENABLE_RUNTIME_OPTIMIZATIONS if (buffer != NULL) { if (file_load_buffer_count == 100000) { free(buffer); buffer = NULL; } else { file_load_buffers[file_load_buffer_count++] = buffer; } } #endif if (buffer == NULL) { rc = ENOMEM; } else { ssize_t i; REDO: i = read(fd, buffer, (size_t)(*size)); if(i == -1) { if(errno == EINTR) { goto REDO; } else { rc = errno; } } else { if (i != *size) { rc = EIO; } } buffer[*size] = 0; } close(fd); } } if(rc && buffer) { free(buffer); buffer = NULL; } if(return_rc) { *return_rc = rc; } return buffer; } static void cancel_relative(char const * base, char** ref_cursor, char** ref_cursor_out, char const * end) { char* cursor = *ref_cursor; char* cursor_out = *ref_cursor_out; do { cursor += 3; while(cursor_out > base && cursor_out[-1] == '/') cursor_out--; while(cursor_out > base && *--cursor_out != '/'); } while(cursor + 3 < end && !memcmp(cursor, "/../", 4)); *ref_cursor = cursor; *ref_cursor_out = cursor_out; } static void eat_space(char ** token) { while ((' ' == **token) || ('\t' == **token)) { ++(*token); } } /* * Prune LibreOffice specific duplicate dependencies to improve * gnumake startup time, and shrink the disk-space footprint. */ static int elide_dependency(const char* key, int key_len, const char **unpacked_end) { #if 0 { int i; fprintf (stderr, "elide?%d!: '", internal_boost); for (i = 0; i < key_len; i++) { fprintf (stderr, "%c", key[i]); } fprintf (stderr, "'\n"); } #endif /* boost brings a plague of header files */ int i; int unpacked = 0; /* walk down path elements */ for (i = 0; i < key_len - 1; i++) { if (key[i] == '/') { if (0 == unpacked) { if (!PATHNCMP(key + i + 1, "workdir/", 8)) { unpacked = 1; continue; } } else { if (!PATHNCMP(key + i + 1, "UnpackedTarball/", 16)) { if (unpacked_end) *unpacked_end = strchr(key + i + 17, '/'); return 1; } } } } return 0; } /* * We collapse tens of internal boost headers to the unpacked target, such * that you can re-compile / install boost and all is well. */ static void emit_single_boost_header(void) { #define BOOST_TARGET "/UnpackedTarball/boost.done" fprintf(stdout, "%s" BOOST_TARGET " ", work_dir); } static void emit_unpacked_target(const char* token, const char* end) { fwrite(token, 1, end-token, stdout); fputs(".done ", stdout); } /* prefix paths to absolute */ static void print_fullpaths(char* line) { char* token; char* end; int boost_count = 0; int token_len; const char * unpacked_end = NULL; /* end of UnpackedTarget match (if any) */ /* for UnpackedTarget the target is GenC{,xx}Object, don't mangle! */ int target_seen = 0; token = line; eat_space(&token); while (*token) { end = token; /* hard to believe that in this day and age drive letters still exist */ if (*end && (':' == *(end+1)) && (('\\' == *(end+2)) || ('/' == *(end+2))) && isalpha((unsigned char)*end)) { end = end + 3; /* only one cross, err drive letter per filename */ } while (*end && (' ' != *end) && ('\t' != *end) && (':' != *end)) { ++end; } token_len = end - token; if (target_seen && elide_dependency(token, token_len, &unpacked_end)) { if (unpacked_end) { if (internal_boost && !PATHNCMP(unpacked_end - 5, "boost", 5)) { ++boost_count; if (boost_count == 1) emit_single_boost_header(); else { /* don't output, and swallow trailing \\\n if any */ token = end; eat_space(&token); if (token[0] == '\\' && token[1] == '\n') end = token + 2; } } else { emit_unpacked_target(token, unpacked_end); } unpacked_end = NULL; } } else { if (fwrite(token, token_len, 1, stdout) != 1) abort(); fputc(' ', stdout); } token = end; eat_space(&token); if (!target_seen && ':' == *token) { target_seen = 1; fputc(':', stdout); ++token; eat_space(&token); } } } static char * eat_space_at_end(char * end) { char * real_end; assert('\0' == *end); real_end = end - 1; while (' ' == *real_end || '\t' == *real_end || '\n' == *real_end || ':' == *real_end) { /* eat colon and whitespace at end */ --real_end; } return real_end; } static char* phony_content_buffer; static char* generate_phony_line(char const * phony_target, char const * extension) { char const * src; char* dest; char* last_dot = NULL; //fprintf(stderr, "generate_phony_line called with phony_target %s and extension %s\n", phony_target, extension); for(dest = phony_content_buffer+work_dir_len+1, src = phony_target; *src != 0; ++src, ++dest) { *dest = *src; if(*dest == '.') { last_dot = dest; } } //fprintf(stderr, "generate_phony_line after phony_target copy: %s\n", phony_content_buffer); for(dest = last_dot+1, src = extension; *src != 0; ++src, ++dest) { *dest = *src; } //fprintf(stderr, "generate_phony_line after extension add: %s\n", phony_content_buffer); strcpy(dest, ": $(gb_Helper_PHONY)\n"); //fprintf(stderr, "generate_phony_line after phony add: %s\n", phony_content_buffer); return phony_content_buffer; } static int generate_phony_file(char* fn, char const * content) { FILE* depfile; depfile = fopen(fn, "w"); if(!depfile) { fprintf(stderr, "Could not open '%s' for writing: %s\n", fn, strerror(errno)); } else { fputs(content, depfile); fclose(depfile); } return !depfile; } static int process(struct hash* dep_hash, char* fn) { int rc; char* buffer; char* end; char* cursor; char* cursor_out; char* base; char* created_line = NULL; char* src_relative; int continuation = 0; char last_ns = 0; off_t size; buffer = file_load(fn, &size, &rc); if(!rc) { base = cursor_out = cursor = end = buffer; end += size; /* first eat unneeded space at the beginning of file */ while(cursor < end && (*cursor == ' ' || *cursor == '\\')) ++cursor; while(cursor < end) { if(*cursor == '\\') { continuation = 1; *cursor_out++ = *cursor++; } else if(*cursor == '/') { if(cursor + 3 < end) { if(!memcmp(cursor, "/../", 4)) { cancel_relative(base, &cursor, &cursor_out, end); } } *cursor_out++ = *cursor++; } else if(*cursor == '\n') { if(!continuation) { *cursor_out = 0; if(base < cursor) { /* here we have a complete rule */ if(last_ns == ':') { /* if the rule ended in ':' that is a no-dep rule * these are the one for which we want to filter * duplicate out */ int key_len = eat_space_at_end(cursor_out) - base; if (!elide_dependency(base,key_len + 1, NULL) && hash_store(dep_hash, base, key_len)) { /* DO NOT modify base after it has been added as key by hash_store */ print_fullpaths(base); putc('\n', stdout); } } else { /* rule with dep, just write it */ print_fullpaths(base); putc('\n', stdout); } last_ns = ' '; // cannot hurt to reset it } cursor += 1; base = cursor_out = cursor; } else { /* here we have a '\' followed by \n this is a continuation * i.e not a complete rule yet */ *cursor_out++ = *cursor++; continuation = 0; // cancel current one (empty lines!) } } else { continuation = 0; /* not using isspace() here save 25% of I refs and 75% of D refs based on cachegrind */ if(*cursor != ' ' && *cursor != '\n' && *cursor != '\t' ) { last_ns = *cursor; } *cursor_out++ = *cursor++; } } /* just in case the file did not end with a \n, there may be a pending rule */ if(base < cursor_out) { if(last_ns == ':') { int key_len = eat_space_at_end(cursor_out) - base; if (!elide_dependency(base,key_len + 1, NULL) && hash_store(dep_hash, base, key_len)) { puts(base); putc('\n', stdout); } } else { puts(base); putc('\n', stdout); } } } else { if(strncmp(fn, work_dir, work_dir_len) == 0) { if(strncmp(fn+work_dir_len, "/Dep/", 5) == 0) { src_relative = fn+work_dir_len+5; // cases ordered by frequency if(strncmp(src_relative, "CxxObject/", 10) == 0) { created_line = generate_phony_line(src_relative, "o"); rc = generate_phony_file(fn, created_line); } else if(strncmp(src_relative, "GenCxxObject/", 13) == 0) { created_line = generate_phony_line(src_relative, "o"); rc = generate_phony_file(fn, created_line); } else if(strncmp(src_relative, "CObject/", 8) == 0) { created_line = generate_phony_line(src_relative, "o"); rc = generate_phony_file(fn, created_line); } else if(strncmp(src_relative, "GenCObject/", 11) == 0) { created_line = generate_phony_line(src_relative, "o"); rc = generate_phony_file(fn, created_line); } else if(strncmp(src_relative, "SdiObject/", 10) == 0) { created_line = generate_phony_line(src_relative, "o"); rc = generate_phony_file(fn, created_line); } else if(strncmp(src_relative, "AsmObject/", 10) == 0) { created_line = generate_phony_line(src_relative, "o"); rc = generate_phony_file(fn, created_line); } else if(strncmp(src_relative, "ObjCxxObject/", 13) == 0) { created_line = generate_phony_line(src_relative, "o"); rc = generate_phony_file(fn, created_line); } else if(strncmp(src_relative, "ObjCObject/", 11) == 0) { created_line = generate_phony_line(src_relative, "o"); rc = generate_phony_file(fn, created_line); } else if(strncmp(src_relative, "CxxClrObject/", 13) == 0) { created_line = generate_phony_line(src_relative, "o"); rc = generate_phony_file(fn, created_line); } else if(strncmp(src_relative, "GenCxxClrObject/", 16) == 0) { created_line = generate_phony_line(src_relative, "o"); rc = generate_phony_file(fn, created_line); } else { fprintf(stderr, "no magic for %s(%s) in %s\n", fn, src_relative, work_dir); } } if(!rc) { puts(created_line); } } } /* Note: yes we are going to leak 'buffer' * this is on purpose, to avoid cloning the 'key' out of it and our special * 'hash' just store the pointer to the key inside of buffer, hence it need * to remain allocated */ // coverity[leaked_storage] - this is on purpose return rc; } static void usage(void) { fputs("Usage: concat-deps \n", stderr); } #define kDEFAULT_HASH_SIZE 4096 #define PHONY_TARGET_BUFFER 4096 static int get_var(char **var, const char *name) { *var = (char *)getenv(name); if(!*var) { fprintf(stderr,"Error: %s is missing in the environment\n", name); return 1; } return 0; } int main(int argc, char** argv) { int rc = 0; off_t in_list_size = 0; char* in_list; char* in_list_cursor; char* in_list_base; struct hash* dep_hash = NULL; const char *env_str; if(argc < 2) { usage(); return 1; } if(get_var(&base_dir, "SRCDIR") || get_var(&work_dir, "WORKDIR")) return 1; work_dir_len = strlen(work_dir); phony_content_buffer = (char*)malloc(PHONY_TARGET_BUFFER); assert(phony_content_buffer); // Don't handle OOM conditions strcpy(phony_content_buffer, work_dir); phony_content_buffer[work_dir_len] = '/'; env_str = getenv("SYSTEM_BOOST"); internal_boost = !env_str || strcmp(env_str,"TRUE"); in_list = file_load(argv[1], &in_list_size, &rc); if(!rc) { dep_hash = hash_create( kDEFAULT_HASH_SIZE); in_list_base = in_list_cursor = in_list; /* extract filename of dep file from a 'space' separated list */ while(*in_list_cursor) { /* the input here may contain Win32 \r\n EOL */ if(*in_list_cursor == ' ' || *in_list_cursor == '\n' || *in_list_cursor == '\r') { *in_list_cursor = 0; if(in_list_base < in_list_cursor) { rc = process(dep_hash, in_list_base); if(rc) { break; } } in_list_cursor += 1; in_list_base = in_list_cursor; } else { in_list_cursor += 1; } } if(!rc) { /* catch the last entry in case the input did not terminate with a 'space' */ if(in_list_base < in_list_cursor) { rc = process(dep_hash, in_list_base); } } #ifdef HASH_STAT fprintf(stderr, "stats: u:%d s:%d l:%d t:%d c:%d m:%d $:%d\n", dep_hash->used, dep_hash->size, dep_hash->load_limit, dep_hash->stored, dep_hash->collisions, dep_hash->memcmp, dep_hash->cost); #endif } #if !ENABLE_RUNTIME_OPTIMIZATIONS { size_t i; hash_destroy(dep_hash); for (i = 0; i != file_load_buffer_count; ++i) { free(file_load_buffers[i]); } } #endif return rc; } /* vim:set shiftwidth=4 softtabstop=4 expandtab: */