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fix #1276 related crashes for re-sumption after cancellation

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2017-10-01 15:13:43 -07:00
parent bec60f763b
commit 05428314be
5 changed files with 31 additions and 11 deletions
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5
src/util/rlimit.cpp
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@ -21,6 +21,7 @@ Revision History:
reslimit::reslimit():
m_cancel(0),
m_suspend(false),
m_count(0),
m_limit(0) {
}
@ -31,12 +32,12 @@ uint64 reslimit::count() const {
bool reslimit::inc() {
++m_count;
return m_cancel == 0 && (m_limit == 0 || m_count <= m_limit);
return (m_cancel == 0 && (m_limit == 0 || m_count <= m_limit)) || m_suspend;
}
bool reslimit::inc(unsigned offset) {
m_count += offset;
return m_cancel == 0 && (m_limit == 0 || m_count <= m_limit);
return (m_cancel == 0 && (m_limit == 0 || m_count <= m_limit)) || m_suspend;
}
void reslimit::push(unsigned delta_limit) {

15
src/util/rlimit.h
View file

@ -23,12 +23,14 @@ Revision History:
class reslimit {
volatile unsigned m_cancel;
bool m_suspend;
uint64 m_count;
uint64 m_limit;
svector<uint64> m_limits;
ptr_vector<reslimit> m_children;
void set_cancel(unsigned f);
friend class scoped_suspend_rlimit;
public:
reslimit();
@ -42,7 +44,7 @@ public:
uint64 count() const;
bool get_cancel_flag() const { return m_cancel > 0; }
bool get_cancel_flag() const { return m_cancel > 0 && !m_suspend; }
char const* get_cancel_msg() const;
void cancel();
void reset_cancel();
@ -61,6 +63,17 @@ public:
};
class scoped_suspend_rlimit {
reslimit & m_limit;
public:
scoped_suspend_rlimit(reslimit& r): m_limit(r) {
r.m_suspend = true;
}
~scoped_suspend_rlimit() {
m_limit.m_suspend = false;
}
};
struct scoped_limits {
reslimit& m_limit;
unsigned m_sz;