diff options
Diffstat (limited to 'gdb/testsuite/gdb.base/multi-forks.exp')
| -rw-r--r-- | gdb/testsuite/gdb.base/multi-forks.exp | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/gdb/testsuite/gdb.base/multi-forks.exp b/gdb/testsuite/gdb.base/multi-forks.exp index 7161be583f2..b607d43d76d 100644 --- a/gdb/testsuite/gdb.base/multi-forks.exp +++ b/gdb/testsuite/gdb.base/multi-forks.exp @@ -53,9 +53,14 @@ global gdb_prompt # parent and child of multiple Unix fork() system calls. # -# Inferior program calls fork 4 times. Since each fork -# calls fork 4 times, there will be 16 forks. Each fork -# saves the return values of its own 4 fork calls. +# The inferior program builds a tree of processes by executing a loop +# four times, calling fork at each iteration. Thus, at each +# iteration, the total number of processes doubles; after four +# iterations, we have 16 processes. Each process saves the results +# from its 'fork' calls, so we can tell which leaf a given process is +# by looking at which forks returned zero and which returned a pid: a +# zero means to take the child's branch; a pid means to take the +# parent's branch. # First set gdb to follow the child. # The result should be that each of the 4 forks returns zero. |