gdbserver/inferiors.h

   1 /* Inferior process information for the remote server for GDB.
   2    Copyright (C) 1993-2022 Free Software Foundation, Inc.
   3
   4    This file is part of GDB.
   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 of the License, or
   9    (at your option) 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, see <http://www.gnu.org/licenses/>.  */
  18
  19 #ifndef GDBSERVER_INFERIORS_H
  20 #define GDBSERVER_INFERIORS_H
  21
  22 #include "gdbsupport/gdb_vecs.h"
  23 #include "dll.h"
  24 #include <list>
  25
  26 struct thread_info;
  27 struct regcache;
  28 struct target_desc;
  29 struct sym_cache;
  30 struct breakpoint;
  31 struct raw_breakpoint;
  32 struct fast_tracepoint_jump;
  33 struct process_info_private;
  34
  35 struct process_info
  36 {
  37   process_info (int pid_, int attached_)
  38   : pid (pid_), attached (attached_)
  39   {}
  40
  41   /* This process' pid.  */
  42   int pid;
  43
  44   /* Nonzero if this child process was attached rather than
  45      spawned.  */
  46   int attached;
  47
  48   /* True if GDB asked us to detach from this process, but we remained
  49      attached anyway.  */
  50   int gdb_detached = 0;
  51
  52   /* The symbol cache.  */
  53   struct sym_cache *symbol_cache = NULL;
  54
  55   /* The list of memory breakpoints.  */
  56   struct breakpoint *breakpoints = NULL;
  57
  58   /* The list of raw memory breakpoints.  */
  59   struct raw_breakpoint *raw_breakpoints = NULL;
  60
  61   /* The list of installed fast tracepoints.  */
  62   struct fast_tracepoint_jump *fast_tracepoint_jumps = NULL;
  63
  64   /* The list of syscalls to report, or just a single element, ANY_SYSCALL,
  65      for unfiltered syscall reporting.  */
  66   std::vector<int> syscalls_to_catch;
  67
  68   const struct target_desc *tdesc = NULL;
  69
  70   /* Private target data.  */
  71   struct process_info_private *priv = NULL;
  72
  73   /* DLLs thats are loaded for this proc.  */
  74   std::list<dll_info> all_dlls;
  75
  76   /* Flag to mark that the DLL list has changed.  */
  77   bool dlls_changed = false;
  78
  79   /* True if the inferior is starting up (inside startup_inferior),
  80      and we're nursing it along (through the shell) until it is ready
  81      to execute its first instruction.  Until that is done, we must
  82      not access inferior memory or registers, as we haven't determined
  83      the target architecture/description.  */
  84   bool starting_up = false;
  85 };
  86
  87 /* Get the pid of PROC.  */
  88
  89 static inline int
  90 pid_of (const process_info *proc)
  91 {
  92   return proc->pid;
  93 }
  94
  95 /* Return a pointer to the process that corresponds to the current
  96    thread (current_thread).  It is an error to call this if there is
  97    no current thread selected.  */
  98
  99 struct process_info *current_process (void);
 100 struct process_info *get_thread_process (const struct thread_info *);
 101
 102 extern std::list<process_info *> all_processes;
 103
 104 /* Invoke FUNC for each process.  */
 105
 106 template <typename Func>
 107 static void
 108 for_each_process (Func func)
 109 {
 110   std::list<process_info *>::iterator next, cur = all_processes.begin ();
 111
 112   while (cur != all_processes.end ())
 113     {
 114       next = cur;
 115       next++;
 116       func (*cur);
 117       cur = next;
 118     }
 119 }
 120
 121 /* Find the first process for which FUNC returns true.  Return NULL if no
 122    process satisfying FUNC is found.  */
 123
 124 template <typename Func>
 125 static process_info *
 126 find_process (Func func)
 127 {
 128   std::list<process_info *>::iterator next, cur = all_processes.begin ();
 129
 130   while (cur != all_processes.end ())
 131     {
 132       next = cur;
 133       next++;
 134
 135       if (func (*cur))
 136         return *cur;
 137
 138       cur = next;
 139     }
 140
 141   return NULL;
 142 }
 143
 144 extern struct thread_info *current_thread;
 145
 146 /* Return the first process in the processes list.  */
 147 struct process_info *get_first_process (void);
 148
 149 struct process_info *add_process (int pid, int attached);
 150 void remove_process (struct process_info *process);
 151 struct process_info *find_process_pid (int pid);
 152 int have_started_inferiors_p (void);
 153 int have_attached_inferiors_p (void);
 154
 155 /* Switch to a thread of PROC.  */
 156 void switch_to_process (process_info *proc);
 157
 158 void clear_inferiors (void);
 159
 160 void *thread_target_data (struct thread_info *);
 161 struct regcache *thread_regcache_data (struct thread_info *);
 162 void set_thread_regcache_data (struct thread_info *, struct regcache *);
 163
 164 /* Set the inferior current working directory.  If CWD is empty, unset
 165    the directory.  */
 166 void set_inferior_cwd (std::string cwd);
 167
 168 #endif /* GDBSERVER_INFERIORS_H */