diff options
Diffstat (limited to 'src/base/ftdbgmem.c')
| -rw-r--r-- | src/base/ftdbgmem.c | 129 |
1 files changed, 84 insertions, 45 deletions
diff --git a/src/base/ftdbgmem.c b/src/base/ftdbgmem.c index cc117acb7..bb04f68e2 100644 --- a/src/base/ftdbgmem.c +++ b/src/base/ftdbgmem.c @@ -509,15 +509,23 @@ } + /* + * ft_mem_get_val_for_source( source, env_var_name ) + * + * Get a numerical value from named environmental variable + * for the site specified by FT_MemSource. For the syntax + * of the environmental variable, see docs/DEBUG. + * + */ static int - ft_mem_check_site_alloc_environment( FT_MemSource source, - const char* env_var_name ) + ft_mem_get_env_val_for_source( FT_MemSource source, + const char* env_var_name ) { char *file_name = (char*)source->file_name; char *c, *c0; - /* return if environment is unset */ + /* return if specified environment is unset */ c = c0 = getenv( env_var_name ); if ( !c ) return -1; @@ -525,24 +533,25 @@ /* return if basename not found anymore */ while ( NULL != ( c = ft_strstr( c, file_name ) ) ) { - /* skip if partial match of basename */ - if ( c != c0 && *(c-1) != ' ' && *(c-1) != PLATFORM_PATH_SEPARATOR[0] ) + /* matched token is 1st or after separator space? */ + if ( c != c0 && *(c-1) != ' ' ) goto NextToken; - /* goto line number after ':' */ + /* check ':', a separator between pathname & line number */ c = c + ft_strlen( file_name ); if ( ':' != *c || !ft_isdigit( c[1] ) ) goto NextToken; c++; - /* compare line number */ + /* check the line number */ if ( atoi( c ) != source->line_no ) goto NextToken; + /* line number matched, skip digits */ while ( ft_isdigit( *c ) ) c++; - /* check alloc limiter after ',' */ + /* check ',', a separator between line number & value */ if ( ',' != *c || !ft_isdigit( c[1] ) ) goto NextToken; c++; @@ -730,6 +739,70 @@ } + static FT_Bool + ft_mem_check_alloc_limiter_for_source( FT_MemSource source, + FT_Long size ) + { + int mem_limit_site_total = -1; /* negative means unlimited */ + int mem_limit_site_cur = -1; /* negative means unlimited */ + FT_Bool exceeds_limit_site_total = FALSE; + FT_Bool exceeds_limit_site_cur = FALSE; + long req_all = source->all_size + size; + long req_cur = source->cur_size + size; +#define FT_HAS_LIMITER( key ) \ + ( mem_limit_ ## key ## _total >= 0 || mem_limit_ ## key ## _cur >= 0 ) +#define FT_HAS_MULTI_LIMITERS( key ) \ + ( mem_limit_ ## key ## _total >= 0 && mem_limit_ ## key ## _cur >= 0 ) +#define FT_TRACE6_DEFINED_LIMIT( req, limit ) \ + { \ + if ( limit >= 0 ) \ + FT_TRACE6(( "%ld =< %ld", req, limit )); \ + } + + mem_limit_site_total = + ft_mem_get_env_val_for_source( source, + "FT2_ALLOC_TOTAL_MAX_SITE" ); + mem_limit_site_cur = + ft_mem_get_env_val_for_source( source, + "FT2_ALLOC_CUR_MAX_SITE" ); + if ( FT_HAS_LIMITER( site ) ) + FT_TRACE6(( "ft_mem_table_set() invoked by %s:%lu, limit:( ", + source->file_name, source->line_no )); + FT_TRACE6_DEFINED_LIMIT( req_all, mem_limit_site_total ); + if ( FT_HAS_MULTI_LIMITERS( site ) ) + FT_TRACE6(( " && " )); + FT_TRACE6_DEFINED_LIMIT( req_cur, mem_limit_site_cur ); + if ( FT_HAS_LIMITER( site ) ) + FT_TRACE6((" )\n")); + + if ( mem_limit_site_total >= 0 && mem_limit_site_total > req_all ) + exceeds_limit_site_total = TRUE; + + if ( mem_limit_site_cur >= 0 && mem_limit_site_cur > req_cur ) + exceeds_limit_site_cur = TRUE; + + if ( exceeds_limit_site_total || exceeds_limit_site_cur ) + { + FT_TRACE6(( "ft_mem_table_set() returns NULL to %s:%lu," + " allocation request exceeds %s-limit (%lu > %lu)\n", + source->file_name, source->line_no, + ( exceeds_limit_site_total ? "site-total" : + "site-current" ), + ( exceeds_limit_site_total ? req_all : + req_cur ), + ( exceeds_limit_site_total ? mem_limit_site_total : + mem_limit_site_cur ) + )); + return FALSE; + } + return TRUE; + +#undef FT_HAS_LIMITER +#undef FT_HAS_MULTI_LIMITERS +#undef FT_TRACE6_DEFINED_LIMIT + } + + extern FT_Pointer ft_mem_debug_alloc( FT_Memory memory, FT_Long size ) @@ -742,44 +815,10 @@ if ( size <= 0 ) ft_mem_debug_panic( "negative block size allocation (%ld)", size ); - { - int mem_limit_site_total = -1; /* negative means unlimited */ - int mem_limit_site_cur = -1; /* negative means unlimited */ - FT_Bool exceeds_limit_site_total = FALSE; - FT_Bool exceeds_limit_site_cur = FALSE; - - - source = ft_mem_table_get_source( table ); - mem_limit_site_total = ft_mem_check_site_alloc_environment( source, "FT2_ALLOC_TOTAL_MAX_SITE" ); - mem_limit_site_cur = ft_mem_check_site_alloc_environment( source, "FT2_ALLOC_CUR_MAX_SITE" ); - if ( mem_limit_site_total >= 0 || mem_limit_site_cur >= 0 ) - FT_TRACE6(("ft_mem_table_set() invoked by %s:%lu, limit:( ", - source->file_name, source->line_no )); - if ( mem_limit_site_total >= 0 ) - FT_TRACE6(("%ld =< %ld", source->all_size + size, mem_limit_site_total )); - if ( mem_limit_site_total >= 0 && mem_limit_site_cur >= 0 ) - FT_TRACE6((" && ")); - if ( mem_limit_site_cur >= 0 ) - FT_TRACE6(("%ld =< %ld", source->cur_size + size, mem_limit_site_cur )); - if ( mem_limit_site_total >= 0 || mem_limit_site_cur >= 0 ) - FT_TRACE6((" )\n")); - - if ( mem_limit_site_total >= 0 && mem_limit_site_total < ( source->all_size + size ) ) - exceeds_limit_site_total = TRUE; - if ( mem_limit_site_cur >= 0 && mem_limit_site_cur < ( source->cur_size + size ) ) - exceeds_limit_site_cur = TRUE; - - if ( exceeds_limit_site_total || exceeds_limit_site_cur ) - { - FT_TRACE6(("ft_mem_table_set() returns NULL to %s:%lu, allocation request exceeds %s-limit (%lu > %lu)\n", - source->file_name, source->line_no, - ( exceeds_limit_site_total ? "site-total" : "site-current" ), - ( exceeds_limit_site_total ? source->all_size : source->cur_size ) + size, - ( exceeds_limit_site_total ? mem_limit_site_total : mem_limit_site_cur ) - )); + source = ft_mem_table_get_source( table ); + if ( source ) + if ( !ft_mem_check_alloc_limiter_for_source( source, size ) ) return NULL; - } - } /* return NULL if the maximum number of allocations was reached */ if ( table->bound_count && |