process address space
process address space
stack A
stack A
stack B
stack B
stack C
stack C
process address space
process address space
stack S
stack S
stack A
stack A
stack C
stack C
user thread
user thread
stack B
stack B
thread
S
thread...
OS thread
OS thread
user thread
user thread
user thread
user thread
yield
yield
yield
yield
yield
yield
thread
A
thread...
thread
B
thread...
thread
C
thread...
thread
A
thread...
OS thread
OS thread
thread
B
thread...
OS thread
OS thread
thread
C
thread...
OS thread
OS thread
sp
sp
sp
sp
sp
sp
sp
sp
sp when yielding to A
sp when yielding to AText is not SVG - cannot display