suzanne.soy/racket
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

clarify errors when creating the sandbox

Browse Source 
svn: r12362
This commit is contained in:
Eli Barzilay 2008-11-09 05:21:30 +00:00
parent f278926617
commit 1e3517d904
1 changed files with 14 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
collects/scribblings/reference/sandbox.scrbl
View File

@ -168,7 +168,6 @@ restriction is enforced).
In all cases, the evaluator operates in an isolated and limited
environment:
@itemize[
@item{It uses a new custodian and namespace. When @scheme[gui?] is
@ -180,6 +179,10 @@ environment:
@item{Each evaluation is wrapped in a @scheme[call-with-limits]; see
also @scheme[sandbox-eval-limits] and @scheme[set-eval-limits].}
]
Note that these limits apply to the creation of the sandbox
environment too --- so, for example, if the memory that is required to
create the sandbox is higher than the limit, then
@scheme[make-evaluator] will fail with a memory limit exception.
Evaluation can also be instrumented to track coverage information when
@scheme[sandbox-coverage-enabled] is set. Exceptions (both syntax and
@ -471,6 +474,16 @@ corresponding limit; alternately, the parameter can be set to
@scheme[#f] to disable all limits (in case more are available in
future versions). The default is @scheme[(list 30 20)].
Note that these limits apply to the creation of the sandbox
environment too --- even @scheme[(make-evaluator 'scheme/base)] can
fail if the limits are strict enough. Therefore, to avoid surprises
you need to catch errors that happen when the sandbox is created.
so, for example, if the memory that is required to
create the sandbox is higher than the limit, then
@scheme[make-evaluator] will fail with a memory limit exception.
When limits are set, @scheme[call-with-limits] (see below) is wrapped
around each use of the evaluator, so consuming too much time or memory
results in an exception. Change the limits of a running evaluator