Move fuse thread args out of fuse session object

libfuse/Makefile

@@ -44,7 +44,6 @@ SRC_C = \
 	lib/fuse.c \
 	lib/fuse_dirents.c \
 	lib/fuse_lowlevel.c \
-	lib/fuse_mt.c \
 	lib/node.c \
 	lib/fuse_node.c \
 	lib/fuse_opt.c \
@@ -57,7 +56,8 @@ SRC_CPP = \
 	lib/format.cpp \
 	lib/os.cpp \
 	lib/cpu.cpp \
-	lib/fuse_loop_mt.cpp \
+	lib/fuse_config.cpp \
+	lib/fuse_loop.cpp \
 	lib/fuse_msgbuf.cpp
 OBJS_C   = $(SRC_C:lib/%.c=build/%.o)
 OBJS_CPP = $(SRC_CPP:lib/%.cpp=build/%.o)

libfuse/include/fuse_config.hpp

@@ -0,0 +1,31 @@
+/*
+  ISC License
+
+  Copyright (c) 2023, Antonio SJ Musumeci <trapexit@spawn.link>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#pragma once
+
+#include <string>
+
+int         fuse_config_get_read_thread_count();
+int         fuse_config_get_process_thread_count();
+int         fuse_config_get_process_thread_queue_depth();
+std::string fuse_config_get_pin_threads();
+
+void        fuse_config_set_read_thread_count(int const);
+void        fuse_config_set_process_thread_count(int const);
+void        fuse_config_set_process_thread_queue_depth(int const);
+void        fuse_config_set_pin_threads(std::string const);

libfuse/lib/fuse.c

@@ -72,10 +72,6 @@ struct fuse_config
   int set_uid;
   int set_gid;
   int help;
-  int read_thread_count;
-  int process_thread_count;
-  int process_thread_queue_depth;
-  char *pin_threads;
 };
 
 struct fuse_fs
@@ -3601,11 +3597,6 @@ static const struct fuse_opt fuse_lib_opts[] =
    FUSE_LIB_OPT("gid=%d",	      gid,0),
    FUSE_LIB_OPT("noforget",           remember,-1),
    FUSE_LIB_OPT("remember=%u",        remember,0),
-   FUSE_LIB_OPT("threads=%d",         read_thread_count,0),
-   FUSE_LIB_OPT("read-thread-count=%d", read_thread_count,0),
-   FUSE_LIB_OPT("process-thread-count=%d", process_thread_count,-1),
-   FUSE_LIB_OPT("process-thread-queue-depth=%d", process_thread_queue_depth,-1),
-   FUSE_LIB_OPT("pin-threads=%s",     pin_threads, 0),
    FUSE_OPT_END
   };
 
@@ -4044,31 +4035,6 @@ fuse_destroy(struct fuse *f)
   fuse_delete_context_key();
 }
 
-int
-fuse_config_read_thread_count(const struct fuse *f_)
-{
-  return f_->conf.read_thread_count;
-}
-
-int
-fuse_config_process_thread_count(const struct fuse *f_)
-{
-  return f_->conf.process_thread_count;
-}
-
-int
-fuse_config_process_thread_queue_depth(const struct fuse *f_)
-{
-  return f_->conf.process_thread_queue_depth;
-}
-
-const
-char*
-fuse_config_pin_threads(const struct fuse *f_)
-{
-  return f_->conf.pin_threads;
-}
-
 void
 fuse_log_metrics_set(int log_)
 {

libfuse/lib/fuse_config.cpp

@@ -0,0 +1,73 @@
+/*
+  ISC License
+
+  Copyright (c) 2023, Antonio SJ Musumeci <trapexit@spawn.link>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#include <string>
+
+static int         g_READ_THREAD_COUNT          = -1;
+static int         g_PROCESS_THREAD_COUNT       = -1;
+static int         g_PROCESS_THREAD_QUEUE_DEPTH = -1;
+static std::string g_PIN_THREADS                = {};
+
+
+int
+fuse_config_get_read_thread_count()
+{
+  return g_READ_THREAD_COUNT;
+}
+
+void
+fuse_config_set_read_thread_count(int const v_)
+{
+  g_READ_THREAD_COUNT = v_;
+}
+
+int
+fuse_config_get_process_thread_count()
+{
+  return g_PROCESS_THREAD_COUNT;
+}
+
+void
+fuse_config_set_process_thread_count(int const v_)
+{
+  g_PROCESS_THREAD_COUNT = v_;
+}
+
+int
+fuse_config_get_process_thread_queue_depth()
+{
+  return g_PROCESS_THREAD_QUEUE_DEPTH;
+}
+
+void
+fuse_config_set_process_thread_queue_depth(int const v_)
+{
+  g_PROCESS_THREAD_QUEUE_DEPTH = v_;
+}
+
+std::string
+fuse_config_get_pin_threads()
+{
+  return g_PIN_THREADS;
+}
+
+void
+fuse_config_set_pin_threads(std::string const v_)
+{
+  g_PIN_THREADS = v_;
+}

libfuse/lib/fuse_loop.cpp

@@ -13,6 +13,7 @@
 #include "fuse_lowlevel.h"
 #include "fuse_misc.h"
 
+#include "fuse_config.hpp"
 #include "fuse_msgbuf.hpp"
 #include "fuse_ll.hpp"
 
@@ -422,6 +423,8 @@ pin_threads(const std::vector<pthread_t>  read_threads_,
             const std::vector<pthread_t> process_threads_,
             const std::string            type_)
 {
+  if(type_.empty())
+    return;
   if(type_ == "R1L")
     return ::pin_threads_R1L(read_threads_);
   if(type_ == "R1P")
@@ -440,6 +443,8 @@ pin_threads(const std::vector<pthread_t>  read_threads_,
     return ::pin_threads_RPSP(read_threads_,process_threads_);
   if(type_ == "R1PPSP")
     return ::pin_threads_R1PPSP(read_threads_,process_threads_);
+
+  syslog_warning("Invalid pin-threads value, ignoring: %s",type_.c_str());
 }
 
 static
@@ -456,7 +461,7 @@ fuse_session_loop_mt(struct fuse_session *se_,
                      const int            raw_read_thread_count_,
                      const int            raw_process_thread_count_,
                      const int            raw_process_thread_queue_depth_,
-                     const char          *pin_threads_type_)
+                     const std::string    pin_threads_type_)
 {
   sem_t finished;
   int read_thread_count;
@@ -496,13 +501,17 @@ fuse_session_loop_mt(struct fuse_session *se_,
   if(process_tp)
     process_threads = process_tp->threads();
 
-  if(pin_threads_type_ != nullptr)
   ::pin_threads(read_threads,process_threads,pin_threads_type_);
 
-  syslog_info("read-thread-count=%d; process-thread-count=%d; process-thread-queue-depth=%d",
+  syslog_info("read-thread-count=%d; "
+              "process-thread-count=%d; "
+              "process-thread-queue-depth=%d; "
+              "pin-threads=%s;"
+              ,
               read_thread_count,
               process_thread_count,
-              process_thread_queue_depth);
+              process_thread_queue_depth,
+              pin_threads_type_);
 
   ::wait(se_,&finished);
 
@@ -510,3 +519,24 @@ fuse_session_loop_mt(struct fuse_session *se_,
 
   return 0;
 }
+
+int
+fuse_loop_mt(struct fuse *f)
+{
+  if(f == NULL)
+    return -1;
+
+  int res = fuse_start_maintenance_thread(f);
+  if(res)
+    return -1;
+
+  res = fuse_session_loop_mt(fuse_get_session(f),
+                             fuse_config_get_read_thread_count(),
+                             fuse_config_get_process_thread_count(),
+                             fuse_config_get_process_thread_queue_depth(),
+                             fuse_config_get_pin_threads());
+
+  fuse_stop_maintenance_thread(f);
+
+  return res;
+}

libfuse/lib/fuse_mt.c

@@ -1,38 +0,0 @@
-/*
-  FUSE: Filesystem in Userspace
-  Copyright (C) 2001-2007  Miklos Szeredi <miklos@szeredi.hu>
-
-  This program can be distributed under the terms of the GNU LGPLv2.
-  See the file COPYING.LIB.
-*/
-
-#include "fuse_i.h"
-#include "fuse_misc.h"
-#include "fuse_lowlevel.h"
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <pthread.h>
-#include <assert.h>
-
-int
-fuse_loop_mt(struct fuse *f)
-{
-  if (f == NULL)
-    return -1;
-
-  int res = fuse_start_maintenance_thread(f);
-  if (res)
-    return -1;
-
-  res = fuse_session_loop_mt(fuse_get_session(f),
-                             fuse_config_read_thread_count(f),
-                             fuse_config_process_thread_count(f),
-                             fuse_config_process_thread_queue_depth(f),
-                             fuse_config_pin_threads(f));
-
-  fuse_stop_maintenance_thread(f);
-
-  return res;
-}

src/option_parser.cpp

@@ -29,6 +29,7 @@
 #include "version.hpp"
 
 #include "fuse.h"
+#include "fuse_config.hpp"
 
 #include <fstream>
 #include <iomanip>
@@ -77,13 +78,12 @@ set_kv_option(const std::string &key_,
 
 static
 void
-set_fuse_threads(Config::Write &cfg_,
+set_fuse_threads(Config::Write &cfg_)
-                      fuse_args     *args_)
 {
-  set_kv_option("read-thread-count",cfg_->fuse_read_thread_count.to_string(),args_);
+  fuse_config_set_read_thread_count(cfg_->fuse_read_thread_count);
-  set_kv_option("process-thread-count",cfg_->fuse_process_thread_count.to_string(),args_);
+  fuse_config_set_process_thread_count(cfg_->fuse_process_thread_count);
-  set_kv_option("process-thread-queue-depth",cfg_->fuse_process_thread_queue_depth.to_string(),args_);
+  fuse_config_set_process_thread_queue_depth(cfg_->fuse_process_thread_queue_depth);
-  set_kv_option("pin-threads",cfg_->fuse_pin_threads.to_string(),args_);
+  fuse_config_set_pin_threads(cfg_->fuse_pin_threads);
 }
 
 static
@@ -447,7 +447,7 @@ namespace options
     set_default_options(args_);
     set_fsname(cfg,args_);
     set_subtype(args_);
-    set_fuse_threads(cfg,args_);
+    set_fuse_threads(cfg);
 
     cfg->finish_initializing();
   }