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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10663 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2003-12-31 05:45:16 +00:00
parent a2e9363617
commit cf902777e9
2 changed files with 18 additions and 20 deletions
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19
include/Support/SlowOperationInformer.h
View File

@ -8,14 +8,13 @@
//===----------------------------------------------------------------------===//
//
// This file defines a simple object which can be used to let the user know what
// is going on when a slow operation is happening,l and gives them the ability
// to cancel it. Potentially slow operations can stack allocate one of these
// is going on when a slow operation is happening, and gives them the ability to
// cancel it. Potentially slow operations can stack allocate one of these
// objects, and periodically call the "progress" method to update the progress
// bar. If the operation takes more than 3 seconds to complete, the progress
// bar is automatically shown and updated every second. As such, the slow
// operation should not print stuff to the screen, and should not be confused if
// an extra line appears on the screen (ie, the cursor should be at the start of
// the line).
// bar. If the operation takes more than 1 second to complete, the progress bar
// is automatically shown and updated. As such, the slow operation should not
// print stuff to the screen, and should not be confused if an extra line
// appears on the screen (ie, the cursor should be at the start of the line).
//
// If the user presses CTRL-C during the operation, the next invocation of the
// progress method with throw an std::string object indicating that the
@ -23,9 +22,9 @@
// the progress method.
//
// Because SlowOperationInformers fiddle around with signals, they cannot be
// nested. The SIGINT signal handler is restored after the
// SlowOperationInformer is destroyed, but the SIGALRM handlers is set back to
// the default.
// nested, and interact poorly with threads. The SIGALRM handler is set back to
// SIGDFL, but the SIGINT signal handler is restored when the
// SlowOperationInformer is destroyed.
//
//===----------------------------------------------------------------------===//

19
include/llvm/Support/SlowOperationInformer.h
View File

@ -8,14 +8,13 @@
//===----------------------------------------------------------------------===//
//
// This file defines a simple object which can be used to let the user know what
// is going on when a slow operation is happening,l and gives them the ability
// to cancel it. Potentially slow operations can stack allocate one of these
// is going on when a slow operation is happening, and gives them the ability to
// cancel it. Potentially slow operations can stack allocate one of these
// objects, and periodically call the "progress" method to update the progress
// bar. If the operation takes more than 3 seconds to complete, the progress
// bar is automatically shown and updated every second. As such, the slow
// operation should not print stuff to the screen, and should not be confused if
// an extra line appears on the screen (ie, the cursor should be at the start of
// the line).
// bar. If the operation takes more than 1 second to complete, the progress bar
// is automatically shown and updated. As such, the slow operation should not
// print stuff to the screen, and should not be confused if an extra line
// appears on the screen (ie, the cursor should be at the start of the line).
//
// If the user presses CTRL-C during the operation, the next invocation of the
// progress method with throw an std::string object indicating that the
@ -23,9 +22,9 @@
// the progress method.
//
// Because SlowOperationInformers fiddle around with signals, they cannot be
// nested. The SIGINT signal handler is restored after the
// SlowOperationInformer is destroyed, but the SIGALRM handlers is set back to
// the default.
// nested, and interact poorly with threads. The SIGALRM handler is set back to
// SIGDFL, but the SIGINT signal handler is restored when the
// SlowOperationInformer is destroyed.
//
//===----------------------------------------------------------------------===//