1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright (c) 1994, by Sun Microsytems, Inc. 24*0Sstevel@tonic-gate */ 25*0Sstevel@tonic-gate 26*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 27*0Sstevel@tonic-gate 28*0Sstevel@tonic-gate /* 29*0Sstevel@tonic-gate * Includes 30*0Sstevel@tonic-gate */ 31*0Sstevel@tonic-gate 32*0Sstevel@tonic-gate #include "prb_internals.h" 33*0Sstevel@tonic-gate 34*0Sstevel@tonic-gate 35*0Sstevel@tonic-gate /* 36*0Sstevel@tonic-gate * Globals 37*0Sstevel@tonic-gate * Memory that prex uses to store combinations in target process 38*0Sstevel@tonic-gate */ 39*0Sstevel@tonic-gate 40*0Sstevel@tonic-gate #define INITMEMSZ 2048 41*0Sstevel@tonic-gate 42*0Sstevel@tonic-gate static char initial_memory[INITMEMSZ]; 43*0Sstevel@tonic-gate static tnf_memseg_t initial_memseg = { 44*0Sstevel@tonic-gate initial_memory, 45*0Sstevel@tonic-gate initial_memory + INITMEMSZ, 46*0Sstevel@tonic-gate DEFAULTMUTEX, 47*0Sstevel@tonic-gate 0 48*0Sstevel@tonic-gate }; 49*0Sstevel@tonic-gate 50*0Sstevel@tonic-gate tnf_memseg_t * __tnf_probe_memseg_p = &initial_memseg; 51*0Sstevel@tonic-gate 52*0Sstevel@tonic-gate 53*0Sstevel@tonic-gate /* 54*0Sstevel@tonic-gate * __tnf_probe_alloc() - allocates memory from the global pool 55*0Sstevel@tonic-gate */ 56*0Sstevel@tonic-gate 57*0Sstevel@tonic-gate char * __tnf_probe_alloc(size_t size)58*0Sstevel@tonic-gate__tnf_probe_alloc(size_t size) 59*0Sstevel@tonic-gate { 60*0Sstevel@tonic-gate tnf_memseg_t * memseg_p = __tnf_probe_memseg_p; 61*0Sstevel@tonic-gate char * ptr; 62*0Sstevel@tonic-gate 63*0Sstevel@tonic-gate ptr = NULL; 64*0Sstevel@tonic-gate 65*0Sstevel@tonic-gate mutex_lock(&memseg_p->i_lock); 66*0Sstevel@tonic-gate 67*0Sstevel@tonic-gate memseg_p->i_reqsz = size; 68*0Sstevel@tonic-gate 69*0Sstevel@tonic-gate if ((memseg_p->min_p + size) <= memseg_p->max_p) { 70*0Sstevel@tonic-gate ptr = memseg_p->min_p; 71*0Sstevel@tonic-gate memseg_p->min_p += size; 72*0Sstevel@tonic-gate } 73*0Sstevel@tonic-gate 74*0Sstevel@tonic-gate memseg_p->i_reqsz = 0; 75*0Sstevel@tonic-gate 76*0Sstevel@tonic-gate mutex_unlock(&memseg_p->i_lock); 77*0Sstevel@tonic-gate 78*0Sstevel@tonic-gate return (ptr); 79*0Sstevel@tonic-gate 80*0Sstevel@tonic-gate } /* end __tnf_probe_alloc */ 81