From 1a1fddae851b344b0a89a8f2753e2d2487f34064 Mon Sep 17 00:00:00 2001
From: Benny Baumann <BenBE@geshi.org>
Date: Sat, 10 Apr 2021 13:56:03 +0200
Subject: [PATCH] Pre-calculate isUserlandThread flag

---
 linux/LinuxProcess.h     | 5 ++---
 linux/LinuxProcessList.c | 1 +
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/linux/LinuxProcess.h b/linux/LinuxProcess.h
index 4a52807e..20963bcb 100644
--- a/linux/LinuxProcess.h
+++ b/linux/LinuxProcess.h
@@ -33,6 +33,7 @@ in the source distribution for its full text.
 typedef struct LinuxProcess_ {
    Process super;
    bool isKernelThread;
+   bool isUserlandThread;
    IOPriority ioPriority;
    unsigned long int cminflt;
    unsigned long int cmajflt;
@@ -106,9 +107,7 @@ typedef struct LinuxProcess_ {
 
 #define Process_isKernelThread(_process) (((const LinuxProcess*)(_process))->isKernelThread)
 
-static inline bool Process_isUserlandThread(const Process* this) {
-   return this->pid != this->tgid;
-}
+#define Process_isUserlandThread(_process) (((const LinuxProcess *)(_process))->isUserlandThread)
 
 extern int pageSize;
 
diff --git a/linux/LinuxProcessList.c b/linux/LinuxProcessList.c
index c2effbfc..66b648ea 100644
--- a/linux/LinuxProcessList.c
+++ b/linux/LinuxProcessList.c
@@ -1315,6 +1315,7 @@ static bool LinuxProcessList_recurseProcTree(LinuxProcessList* this, openat_arg_
       LinuxProcess* lp = (LinuxProcess*) proc;
 
       proc->tgid = parent ? parent->pid : pid;
+      lp->isUserlandThread = proc->pid != proc->tgid;
 
 #ifdef HAVE_OPENAT
       int procFd = openat(dirFd, entry->d_name, O_PATH | O_DIRECTORY | O_NOFOLLOW);