gdbserver/inferiors.h

   1 /* Inferior process information for the remote server for GDB.
   2    Copyright (C) 1993-2021 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
  80 /* Get the pid of PROC.  */
  81
  82 static inline int
  83 pid_of (const process_info *proc)
  84 {
  85   return proc->pid;
  86 }
  87
  88 /* Return a pointer to the process that corresponds to the current
  89    thread (current_thread).  It is an error to call this if there is
  90    no current thread selected.  */
  91
  92 struct process_info *current_process (void);
  93 struct process_info *get_thread_process (const struct thread_info *);
  94
  95 extern std::list<process_info *> all_processes;
  96
  97 /* Invoke FUNC for each process.  */
  98
  99 template <typename Func>
 100 static void
 101 for_each_process (Func func)
 102 {
 103   std::list<process_info *>::iterator next, cur = all_processes.begin ();
 104
 105   while (cur != all_processes.end ())
 106     {
 107       next = cur;
 108       next++;
 109       func (*cur);
 110       cur = next;
 111     }
 112 }
 113
 114 /* Find the first process for which FUNC returns true.  Return NULL if no
 115    process satisfying FUNC is found.  */
 116
 117 template <typename Func>
 118 static process_info *
 119 find_process (Func func)
 120 {
 121   std::list<process_info *>::iterator next, cur = all_processes.begin ();
 122
 123   while (cur != all_processes.end ())
 124     {
 125       next = cur;
 126       next++;
 127
 128       if (func (*cur))
 129         return *cur;
 130
 131       cur = next;
 132     }
 133
 134   return NULL;
 135 }
 136
 137 extern struct thread_info *current_thread;
 138
 139 /* Return the first process in the processes list.  */
 140 struct process_info *get_first_process (void);
 141
 142 struct process_info *add_process (int pid, int attached);
 143 void remove_process (struct process_info *process);
 144 struct process_info *find_process_pid (int pid);
 145 int have_started_inferiors_p (void);
 146 int have_attached_inferiors_p (void);
 147
 148 /* Switch to a thread of PROC.  */
 149 void switch_to_process (process_info *proc);
 150
 151 void clear_inferiors (void);
 152
 153 void *thread_target_data (struct thread_info *);
 154 struct regcache *thread_regcache_data (struct thread_info *);
 155 void set_thread_regcache_data (struct thread_info *, struct regcache *);
 156
 157 #endif /* GDBSERVER_INFERIORS_H */