Introduce Machine class for host-specific info (split from ProcessList)

First stage in sanitizing the process list structure so that htop
can support other types of lists too (cgroups, filesystems, ...),
in the not-too-distant future.

This introduces struct Machine for system-wide information while
keeping process-list information in ProcessList (now much less).
Next step is to propogate this separation into each platform, to
match these core changes.

1 files changed, 89 insertions, 0 deletions

diff --git a/Machine.h b/Machine.h
new file mode 100644
index 00000000..3683701a
--- /dev/null
+++ b/Machine.h
@@ -0,0 +1,89 @@
+#ifndef HEADER_Machine
+#define HEADER_Machine
+/*
+htop - Machine.h
+(C) 2023 Red Hat, Inc.
+(C) 2004,2005 Hisham H. Muhammad
+Released under the GNU GPLv2+, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include "config.h" // IWYU pragma: keep
+
+#include <limits.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <sys/time.h>
+#include <sys/types.h>
+
+#include "Hashtable.h"
+#include "Settings.h"
+#include "UsersTable.h"
+#include "Vector.h"
+
+#ifdef HAVE_LIBHWLOC
+#include <hwloc.h>
+#endif
+
+
+#ifndef MAX_NAME
+#define MAX_NAME 128
+#endif
+
+#ifndef MAX_READ
+#define MAX_READ 2048
+#endif
+
+typedef unsigned long long int memory_t;
+#define MEMORY_MAX ULLONG_MAX
+
+struct ProcessList_;
+
+typedef struct Machine_ {
+   Settings* settings;
+
+   struct timeval realtime;   /* time of the current sample */
+   uint64_t realtimeMs;       /* current time in milliseconds */
+   uint64_t monotonicMs;      /* same, but from monotonic clock */
+
+   #ifdef HAVE_LIBHWLOC
+   hwloc_topology_t topology;
+   bool topologyOk;
+   #endif
+
+   memory_t totalMem;
+   memory_t usedMem;
+   memory_t buffersMem;
+   memory_t cachedMem;
+   memory_t sharedMem;
+   memory_t availableMem;
+
+   memory_t totalSwap;
+   memory_t usedSwap;
+   memory_t cachedSwap;
+
+   unsigned int activeCPUs;
+   unsigned int existingCPUs;
+
+   UsersTable* usersTable;
+   uid_t userId;
+
+   /* To become an array of lists - processes, cgroups, filesystems,... etc */
+   /* for now though, just point back to the one list we have at the moment */
+   struct ProcessList_ *pl;
+} Machine;
+
+
+Machine* Machine_new(UsersTable* usersTable, uid_t userId);
+
+void Machine_init(Machine* this, UsersTable* usersTable, uid_t userId);
+
+void Machine_delete(Machine* this);
+
+void Machine_done(Machine* this);
+
+bool Machine_isCPUonline(const Machine* this, unsigned int id);
+
+void Machine_addList(Machine* this, struct ProcessList_ *pl);
+
+#endif