X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~mdw/git/mLib/blobdiff_plain/dd3c57bc8cac59e0d657ee665ce462988d27d714..18c831dcd0ae4d660c70ccac69d27ed2a97851be:/alloc.3

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-.\" -*-nroff-*-
-.TH alloc 3 "8 May 1999" "Straylight/Edgeware" "mLib utilities library"
-.\" @xmalloc
-.\" @xrealloc
-.\" @xstrdup
-.\" @xfree
-.\" @x_alloc
-.\" @x_strdup
-.\" @x_realloc
-.\" @x_free
-.SH NAME
-alloc \- mLib low-level memory allocation
-.SH SYNOPSIS
-.nf
-.B "#include <mLib/alloc.h>"
-
-.BI "void *x_alloc(arena *" a ", size_t " sz );
-.BI "char *x_strdup(arena *" a ", const char *" s );
-.BI "void *x_realloc(arena *" a ", void *" p ", size_t " sz ", size_t " osz );
-.BI "void x_free(arena *" a ", void *" p );
-
-.BI "void *xmalloc(size_t " sz );
-.BI "void *xrealloc(void *" p ", size_t " sz ", size_t " osz );
-.BI "char *xstrdup(const char *" s );
-.BI "void xfree(void *" p );
-.fi
-.SH DESCRIPTION
-These functions allocate and return blocks of memory.  If insufficient
-memory is available, an
-.B EXC_NOMEM
-exception is raised.
-.PP
-The functions
-.BR x_alloc ,
-.BR x_realloc ,
-.BR x_strdup
-and
-.BR x_free
-work with a given arena (see
-.BR arena (3)).
-.B x_alloc
-allocates a block of a given size;
-.B x_realloc
-resizes an allocated block;
-.B x_strdup
-allocates a copy of a null-terminated string; and
-.B x_free
-releases a block.
-.RB ( x_free
-is supplied for orthogonality's sake: it's equivalent to calling the
-.BR A_FREE (3)
-macro.)
-.PP
-The
-.BR xmalloc ,
-.BR xrealloc ,
-.BR xstrdup
-and
-.BR xfree
-macros are provided as a convenient interface to failsafe memory
-allocation from the current arena
-.BR arena_global (3).
-.SH "SEE ALSO"
-.BR arena (3),
-.BR exc (3),
-.BR mLib (3).
-.SH AUTHOR
-Mark Wooding, <mdw@distorted.org.uk>
-