1  /* Copyright (C) 2021-2023 Free Software Foundation, Inc.
       2     Contributed by Oracle.
       3  
       4     This file is part of GNU Binutils.
       5  
       6     This program is free software; you can redistribute it and/or modify
       7     it under the terms of the GNU General Public License as published by
       8     the Free Software Foundation; either version 3, or (at your option)
       9     any later version.
      10  
      11     This program is distributed in the hope that it will be useful,
      12     but WITHOUT ANY WARRANTY; without even the implied warranty of
      13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      14     GNU General Public License for more details.
      15  
      16     You should have received a copy of the GNU General Public License
      17     along with this program; if not, write to the Free Software
      18     Foundation, 51 Franklin Street - Fifth Floor, Boston,
      19     MA 02110-1301, USA.  */
      20  
      21  /* Lineage events for process fork, exec, etc. */
      22  
      23  #ifndef DESCENDANTS_H
      24  #define DESCENDANTS_H
      25  
      26  #include <dlfcn.h>
      27  #include <errno.h>
      28  #include <fcntl.h>
      29  #include <alloca.h>
      30  #include <assert.h>
      31  
      32  #include "gp-defs.h"
      33  #include "gp-experiment.h"
      34  #include "collector.h"
      35  #include "memmgr.h"
      36  #include "cc_libcollector.h"
      37  #include "tsd.h"
      38  
      39  /* configuration, not changed after init. */
      40  typedef enum
      41  {
      42    LM_DORMANT        = -2,   /* env vars preserved, not recording */
      43    LM_CLOSED         = -1,   /* env vars cleared, not recording */
      44    LM_TRACK_LINEAGE  = 1,    /* env vars preserved, recording */
      45  } line_mode_t;
      46  
      47  extern line_mode_t line_mode;
      48  extern int user_follow_mode;
      49  extern int java_mode;
      50  extern int dbg_current_mode; 	/* for debug only */
      51  extern unsigned line_key;
      52  extern char **sp_env_backup;
      53  
      54  #define INIT_REENTRANCE(x)  ((x) = __collector_tsd_get_by_key (line_key))
      55  #define CHCK_REENTRANCE(x)  (((INIT_REENTRANCE(x)) == NULL) || (*(x) != 0))
      56  #define PUSH_REENTRANCE(x)  ((*(x))++)
      57  #define POP_REENTRANCE(x)   ((*(x))--)
      58  
      59  /* environment variables that must be forwarded to descendents */
      60  #define SP_COLLECTOR_PARAMS         "SP_COLLECTOR_PARAMS"
      61  #define SP_COLLECTOR_EXPNAME        "SP_COLLECTOR_EXPNAME"
      62  #define SP_COLLECTOR_FOLLOW_SPEC    "SP_COLLECTOR_FOLLOW_SPEC"
      63  #define SP_COLLECTOR_FOUNDER        "SP_COLLECTOR_FOUNDER"
      64  #define SP_PRELOAD_STRINGS          "SP_COLLECTOR_PRELOAD"
      65  #define LD_PRELOAD_STRINGS          "LD_PRELOAD"
      66  #define SP_LIBPATH_STRINGS          "SP_COLLECTOR_LIBRARY_PATH"
      67  #define LD_LIBPATH_STRINGS          "LD_LIBRARY_PATH"
      68  #define JAVA_TOOL_OPTIONS          "JAVA_TOOL_OPTIONS"
      69  #define COLLECTOR_JVMTI_OPTION     "-agentlib:gp-collector"
      70  
      71  extern int __collector_linetrace_shutdown_hwcs_6830763_XXXX;
      72  extern void __collector_env_unset (char *envp[]);
      73  extern void __collector_env_save_preloads ();
      74  extern char ** __collector_env_backup ();
      75  extern void __collector_env_backup_free ();
      76  extern void __collector_env_update (char *envp[]);
      77  extern void __collector_env_print (char *label);
      78  extern void __collector_env_printall (char *label, char *envp[]);
      79  extern char ** __collector_env_allocate (char *const old_env[], int allocate_env);
      80  
      81  #endif