Managing breakpoints

Breakpoints are the main way to interrupt your running program for inspection at specific points. We can create, modify, delete, or list breakpoints through LLDB.

Creating a breakpoint

We use the breakpoint set command to create a breakpoint:

4> func sayHello(){ 
  5.     print("Hi") 
  6. } 
  7> sayHello() 
Hi 
  8> :breakpoint set --name sayHello 
Breakpoint 1: where = $__lldb_expr5`__lldb_expr_4.sayHello () -> () + 4 at repl.swift:5, address = 0x00000001005c6064 

Listing breakpoints

We use the breakpoint list command to list the names and locations of breakpoints in a program:

(lldb) breakpoint list 
Current breakpoints: 
1: name = 'sayHello', locations = 1, resolved = 1, hit count = 1 
  1.1: where = $__lldb_expr5`__lldb_expr_4.sayHello () -> () + 4 at repl.swift:5, address = 0x00000001005c6064, resolved, hit count = 1 

Modifying a breakpoint

Another interesting thing you can do with breakpoints is to add conditions on activation. Using...